{"id":361,"date":"2019-11-04T12:00:56","date_gmt":"2019-11-04T12:00:56","guid":{"rendered":"http:\/\/pavclients.com\/moalboal\/?post_type=product&#038;p=361"},"modified":"2020-07-06T08:22:31","modified_gmt":"2020-07-06T08:22:31","slug":"diadem-urchin","status":"publish","type":"product","link":"https:\/\/reefspecies.com\/moalboal\/species\/diadem-urchin\/","title":{"rendered":"Diadem urchin"},"content":{"rendered":"<div id=\"rdp-we-main\" data-resource=\"https:\/\/en.wikipedia.org\/wiki\/Diadema_setosum\">\n<div id=\"rdp-we-mw-aria-live-region\" class=\"mw-aria-live-region\" aria-live=\"polite\"><\/div>\n<div class=\"vector-header-container\">\n\t<header class=\"vector-header mw-header no-font-mode-scale\">\n\t\t<div class=\"vector-header-start\">\n\t\t\t<nav class=\"vector-main-menu-landmark\" aria-label=\"Site\">\n\t\t\t\t\n<div id=\"rdp-we-vector-main-menu-dropdown\" class=\"vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right\"  title=\"Main menu\" >\n\t<input type=\"checkbox\" id=\"rdp-we-vector-main-menu-dropdown-checkbox\" role=\"button\" aria-haspopup=\"true\" data-event-name=\"ui.dropdown-vector-main-menu-dropdown\" class=\"vector-dropdown-checkbox\"  aria-label=\"Main menu\"  >\n\t<label id=\"rdp-we-vector-main-menu-dropdown-label\" for=\"vector-main-menu-dropdown-checkbox\" class=\"vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only\" aria-hidden=\"true\"  ><span class=\"vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu\"><\/span>\n\n<span class=\"vector-dropdown-label-text\">Main menu<\/span>\n\t<\/label>\n\t<div class=\"vector-dropdown-content\">\n\n\n\t\t\t\t<div id=\"rdp-we-vector-main-menu-unpinned-container\" class=\"vector-unpinned-container\">\n\t\t\n<div id=\"rdp-we-vector-main-menu\" class=\"vector-main-menu vector-pinnable-element\">\n\t<div\n\tclass=\"vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned\"\n\tdata-feature-name=\"main-menu-pinned\"\n\tdata-pinnable-element-id=\"vector-main-menu\"\n\tdata-pinned-container-id=\"vector-main-menu-pinned-container\"\n\tdata-unpinned-container-id=\"vector-main-menu-unpinned-container\"\n>\n\t<div class=\"vector-pinnable-header-label\">Main menu<\/div>\n\t<button class=\"vector-pinnable-header-toggle-button vector-pinnable-header-pin-button\" data-event-name=\"pinnable-header.vector-main-menu.pin\">move to sidebar<\/button>\n\t<button class=\"vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button\" data-event-name=\"pinnable-header.vector-main-menu.unpin\">hide<\/button>\n<\/div>\n\n\t\n<div id=\"rdp-we-p-navigation\" class=\"vector-menu mw-portlet mw-portlet-navigation\"  >\n\t<div class=\"vector-menu-heading\">\n\t\tNavigation\n\t<\/div>\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t\n\t\t\t<li id=\"rdp-we-n-mainpage-description\" class=\"mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Main_Page\" title=\"Visit the main page [z]\" accesskey=\"z\" target=\"_new\" class=\"wiki-link\"><span>Main page<\/span><\/a><\/li><li id=\"rdp-we-n-contents\" class=\"mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wikipedia:Contents\" title=\"Guides to browsing Wikipedia\" target=\"_new\" class=\"wiki-link\"><span>Contents<\/span><\/a><\/li><li id=\"rdp-we-n-currentevents\" class=\"mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Portal:Current_events\" title=\"Articles related to current events\" target=\"_new\" class=\"wiki-link\"><span>Current events<\/span><\/a><\/li><li id=\"rdp-we-n-randompage\" class=\"mw-list-item\"><span>Random article<\/span><\/li><li id=\"rdp-we-n-aboutsite\" class=\"mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wikipedia:About\" title=\"Learn about Wikipedia and how it works\" target=\"_new\" class=\"wiki-link\"><span>About Wikipedia<\/span><\/a><\/li><li id=\"rdp-we-n-contactpage\" class=\"mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wikipedia:Contact_us\" title=\"How to contact Wikipedia\" target=\"_new\" class=\"wiki-link\"><span>Contact us<\/span><\/a><\/li>\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n\t\n<div id=\"rdp-we-p-interaction\" class=\"vector-menu mw-portlet mw-portlet-interaction\"  >\n\t<div class=\"vector-menu-heading\">\n\t\tContribute\n\t<\/div>\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t\n\t\t\t<li id=\"rdp-we-n-help\" class=\"mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Help:Contents\" title=\"Guidance on how to use and edit Wikipedia\" target=\"_new\" class=\"wiki-link\"><span>Help<\/span><\/a><\/li><li id=\"rdp-we-n-introduction\" class=\"mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Help:Introduction\" title=\"Learn how to edit Wikipedia\" target=\"_new\" class=\"wiki-link\"><span>Learn to edit<\/span><\/a><\/li><li id=\"rdp-we-n-portal\" class=\"mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wikipedia:Community_portal\" title=\"The hub for editors\" target=\"_new\" class=\"wiki-link\"><span>Community portal<\/span><\/a><\/li><li id=\"rdp-we-n-recentchanges\" class=\"mw-list-item\"><span>Recent changes<\/span><\/li><li id=\"rdp-we-n-upload\" class=\"mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wikipedia:File_upload_wizard\" title=\"Add images or other media for use on Wikipedia\" target=\"_new\" class=\"wiki-link\"><span>Upload file<\/span><\/a><\/li><li id=\"rdp-we-n-specialpages\" class=\"mw-list-item\"><span>Special pages<\/span><\/li>\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n<\/div>\n\n\t\t\t\t<\/div>\n\n\t<\/div>\n<\/div>\n\n\t\t<\/nav>\n\t\t\t\n<a href=\"https:\/\/en.wikipedia.org\/wiki\/Main_Page\" class=\"mw-logo wiki-link\" target=\"_new\">\n\t<img loading=\"lazy\" decoding=\"async\" class=\"mw-logo-icon\" src=\"https:\/\/en.wikipedia.org\/static\/images\/icons\/enwiki-25.svg\" alt=\"\" aria-hidden=\"true\" height=\"50\" width=\"50\">\n\t<span class=\"mw-logo-container skin-invert\">\n\t\t<img decoding=\"async\" class=\"mw-logo-wordmark\" alt=\"Wikipedia\" src=\"https:\/\/en.wikipedia.org\/static\/images\/mobile\/copyright\/wikipedia-wordmark-en-25.svg\" style=\"width: 8.75em; height: 1.375em;\">\n\t\t<img loading=\"lazy\" decoding=\"async\" class=\"mw-logo-tagline\" alt=\"The Free Encyclopedia\" src=\"https:\/\/en.wikipedia.org\/static\/images\/mobile\/copyright\/wikipedia-tagline-en-25.svg\" width=\"140\" height=\"11\" style=\"width: 8.75em; height: 0.6875em;\">\n\t<\/span>\n<\/a>\n\n\t\t<\/div>\n\t\t<div class=\"vector-header-end\">\n\t\t\t\n<div id=\"rdp-we-p-search\" role=\"search\" class=\"vector-search-box-vue  vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box\">\n\t<span class=\"vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search\"><\/span>\n\n<span>Search<\/span>\n\t\n\t<div class=\"vector-typeahead-search-container\">\n\t\t<div class=\"cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width\">\n\t\t\t<form action=\"\/w\/index.php\" id=\"rdp-we-searchform\" class=\"cdx-search-input cdx-search-input--has-end-button\">\n\t\t\t\t<div id=\"rdp-we-simpleSearch\" class=\"cdx-search-input__input-wrapper\"  data-search-loc=\"header-moved\">\n\t\t\t\t\t<div class=\"cdx-text-input cdx-text-input--has-start-icon\">\n\t\t\t\t\t\t<input\n\t\t\t\t\t\t\tclass=\"cdx-text-input__input mw-searchInput\" autocomplete=\"off\"\n\t\t\t\t\t\t\t type=\"search\" name=\"search\" placeholder=\"Search Wikipedia\" aria-label=\"Search Wikipedia\" autocapitalize=\"none\" spellcheck=\"false\" title=\"Search Wikipedia [f]\" accesskey=\"f\" id=\"rdp-we-searchInput\"\n\t\t\t\t\t\t\t>\n\t\t\t\t\t\t<span class=\"cdx-text-input__icon cdx-text-input__start-icon\"><\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<input type=\"hidden\" name=\"title\" value=\"Special:Search\">\n\t\t\t\t<\/div>\n\t\t\t\t<button class=\"cdx-button cdx-search-input__end-button\">Search<\/button>\n\t\t\t<\/form>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\t\t\t<nav class=\"vector-user-links vector-user-links-wide\" aria-label=\"Personal tools\">\n\t<div class=\"vector-user-links-main\">\n\t\n<div id=\"rdp-we-p-vector-user-menu-preferences\" class=\"vector-menu mw-portlet emptyPortlet\"  >\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t\n\t\t\t\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n\t\n<div id=\"rdp-we-p-vector-user-menu-userpage\" class=\"vector-menu mw-portlet emptyPortlet\"  >\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t\n\t\t\t\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n\t<nav class=\"vector-appearance-landmark\" aria-label=\"Appearance\">\n\t\t\n<div id=\"rdp-we-vector-appearance-dropdown\" class=\"vector-dropdown\"  title=\"Change the appearance of the page&#039;s font size, width, and color\" >\n\t<input type=\"checkbox\" id=\"rdp-we-vector-appearance-dropdown-checkbox\" role=\"button\" aria-haspopup=\"true\" data-event-name=\"ui.dropdown-vector-appearance-dropdown\" class=\"vector-dropdown-checkbox\"  aria-label=\"Appearance\"  >\n\t<label id=\"rdp-we-vector-appearance-dropdown-label\" for=\"vector-appearance-dropdown-checkbox\" class=\"vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only\" aria-hidden=\"true\"  ><span class=\"vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance\"><\/span>\n\n<span class=\"vector-dropdown-label-text\">Appearance<\/span>\n\t<\/label>\n\t<div class=\"vector-dropdown-content\">\n\n\n\t\t\t<div id=\"rdp-we-vector-appearance-unpinned-container\" class=\"vector-unpinned-container\">\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\n\t<\/div>\n<\/div>\n\n\t<\/nav>\n\t\n<div id=\"rdp-we-p-vector-user-menu-notifications\" class=\"vector-menu mw-portlet emptyPortlet\"  >\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t\n\t\t\t\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n\t\n<div id=\"rdp-we-p-vector-user-menu-overflow\" class=\"vector-menu mw-portlet\"  >\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t<li id=\"rdp-we-pt-sitesupport-2\" class=\"mw-list-item user-links-collapsible-item\"><a data-mw-interface href=\"https:\/\/donate.wikimedia.org\/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=en.wikipedia.org&uselang=en\" class=\" wiki-link\" target=\"_new\"><span>Donate<\/span><\/a>\n<\/li>\n<li id=\"rdp-we-pt-createaccount-2\" class=\"mw-list-item user-links-collapsible-item\"><span>Create account<\/span>\n<\/li>\n<li id=\"rdp-we-pt-login-2\" class=\"mw-list-item user-links-collapsible-item\"><span>Log in<\/span>\n<\/li>\n\n\t\t\t\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n\t<\/div>\n\t\n<div id=\"rdp-we-vector-user-links-dropdown\" class=\"vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out user-links-collapsible-item\"  title=\"Log in and more options\" >\n\t<input type=\"checkbox\" id=\"rdp-we-vector-user-links-dropdown-checkbox\" role=\"button\" aria-haspopup=\"true\" data-event-name=\"ui.dropdown-vector-user-links-dropdown\" class=\"vector-dropdown-checkbox\"  aria-label=\"Personal tools\"  >\n\t<label id=\"rdp-we-vector-user-links-dropdown-label\" for=\"vector-user-links-dropdown-checkbox\" class=\"vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only\" aria-hidden=\"true\"  ><span class=\"vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis\"><\/span>\n\n<span class=\"vector-dropdown-label-text\">Personal tools<\/span>\n\t<\/label>\n\t<div class=\"vector-dropdown-content\">\n\n\n\t\t\n<div id=\"rdp-we-p-personal\" class=\"vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item\"  title=\"User menu\" >\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t<li id=\"rdp-we-pt-sitesupport\" class=\"mw-list-item user-links-collapsible-item\"><a data-mw-interface href=\"https:\/\/donate.wikimedia.org\/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=en.wikipedia.org&uselang=en\" class=\" wiki-link\" target=\"_new\"><span class=\"vector-icon mw-ui-icon-heart mw-ui-icon-wikimedia-heart\"><\/span>\n\n<span>Donate<\/span><\/a>\n<\/li>\n<li id=\"rdp-we-pt-createaccount\" class=\"mw-list-item user-links-collapsible-item\"><span class=\"vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd\"><\/span>\n\n<span>Create account<\/span>\n<\/li>\n<li id=\"rdp-we-pt-login\" class=\"mw-list-item user-links-collapsible-item\"><span class=\"vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn\"><\/span>\n\n<span>Log in<\/span>\n<\/li>\n\n\t\t\t\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n\t\n\t<\/div>\n<\/div>\n\n<\/nav>\n\n\t\t<\/div>\n\t<\/header>\n<\/div>\n<div class=\"mw-page-container\">\n\t<div class=\"mw-page-container-inner\">\n\t\t<div class=\"vector-sitenotice-container\">\n\t\t\t<div id=\"rdp-we-siteNotice\"><!-- CentralNotice --><\/div>\n\t\t<\/div>\n\t\t<div class=\"vector-column-start\">\n\t\t\t<div class=\"vector-main-menu-container\">\n\t\t\n\t<\/div>\n\t<div class=\"vector-sticky-pinned-container\">\n\t\t\t\t<nav id=\"rdp-we-mw-panel-toc\" aria-label=\"Contents\" data-event-name=\"ui.sidebar-toc\" class=\"mw-table-of-contents-container vector-toc-landmark\">\n\t\t\t\t\t<div id=\"rdp-we-vector-toc-pinned-container\" class=\"vector-pinned-container\">\n\t\t\t\t\t<div id=\"rdp-we-vector-toc\" class=\"vector-toc vector-pinnable-element\">\n\t<div\n\tclass=\"vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned\"\n\tdata-feature-name=\"toc-pinned\"\n\tdata-pinnable-element-id=\"vector-toc\"\n\tdata-pinned-container-id=\"vector-toc-pinned-container\"\n\tdata-unpinned-container-id=\"vector-toc-unpinned-container\"\n>\n\t<h2 class=\"vector-pinnable-header-label\">Contents<\/h2>\n\t<button class=\"vector-pinnable-header-toggle-button vector-pinnable-header-pin-button\" data-event-name=\"pinnable-header.vector-toc.pin\">move to sidebar<\/button>\n\t<button class=\"vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button\" data-event-name=\"pinnable-header.vector-toc.unpin\">hide<\/button>\n<\/div>\n\n\n\t<ul class=\"vector-toc-contents\" id=\"rdp-we-mw-panel-toc-list\">\n\t\t<li id=\"rdp-we-toc-mw-content-text\"\n\t\t\tclass=\"vector-toc-list-item vector-toc-level-1\">\n\t\t\t<a href=\"#\" class=\"vector-toc-link\">\n\t\t\t\t<div class=\"vector-toc-text\">(Top)<\/div>\n\t\t\t<\/a>\n\t\t<\/li>\n\t\t<li id=\"rdp-we-toc-Description\"\n\t\tclass=\"vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded\">\n\t\t<a class=\"vector-toc-link\" href=\"#Description\">\n\t\t\t<div class=\"vector-toc-text\">\n\t\t\t\t<span class=\"vector-toc-numb\">1<\/span>\n\t\t\t\t<span>Description<\/span>\n\t\t\t<\/div>\n\t\t<\/a>\n\t\t\n\t\t<ul id=\"rdp-we-toc-Description-sublist\" class=\"vector-toc-list\">\n\t\t<\/ul>\n\t<\/li>\n\t<li id=\"rdp-we-toc-Distribution_and_habitat\"\n\t\tclass=\"vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded\">\n\t\t<a class=\"vector-toc-link\" href=\"#Distribution_and_habitat\">\n\t\t\t<div class=\"vector-toc-text\">\n\t\t\t\t<span class=\"vector-toc-numb\">2<\/span>\n\t\t\t\t<span>Distribution and habitat<\/span>\n\t\t\t<\/div>\n\t\t<\/a>\n\t\t\n\t\t<ul id=\"rdp-we-toc-Distribution_and_habitat-sublist\" class=\"vector-toc-list\">\n\t\t<\/ul>\n\t<\/li>\n\t<li id=\"rdp-we-toc-Biology\"\n\t\tclass=\"vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded\">\n\t\t<a class=\"vector-toc-link\" href=\"#Biology\">\n\t\t\t<div class=\"vector-toc-text\">\n\t\t\t\t<span class=\"vector-toc-numb\">3<\/span>\n\t\t\t\t<span>Biology<\/span>\n\t\t\t<\/div>\n\t\t<\/a>\n\t\t\n\t\t<ul id=\"rdp-we-toc-Biology-sublist\" class=\"vector-toc-list\">\n\t\t<\/ul>\n\t<\/li>\n\t<li id=\"rdp-we-toc-Gallery\"\n\t\tclass=\"vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded\">\n\t\t<a class=\"vector-toc-link\" href=\"#Gallery\">\n\t\t\t<div class=\"vector-toc-text\">\n\t\t\t\t<span class=\"vector-toc-numb\">4<\/span>\n\t\t\t\t<span>Gallery<\/span>\n\t\t\t<\/div>\n\t\t<\/a>\n\t\t\n\t\t<ul id=\"rdp-we-toc-Gallery-sublist\" class=\"vector-toc-list\">\n\t\t<\/ul>\n\t<\/li>\n\t<li id=\"rdp-we-toc-Bibliography\"\n\t\tclass=\"vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded\">\n\t\t<a class=\"vector-toc-link\" href=\"#Bibliography\">\n\t\t\t<div class=\"vector-toc-text\">\n\t\t\t\t<span class=\"vector-toc-numb\">5<\/span>\n\t\t\t\t<span>Bibliography<\/span>\n\t\t\t<\/div>\n\t\t<\/a>\n\t\t\n\t\t<ul id=\"rdp-we-toc-Bibliography-sublist\" class=\"vector-toc-list\">\n\t\t<\/ul>\n\t<\/li>\n\t<li id=\"rdp-we-toc-References\"\n\t\tclass=\"vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded\">\n\t\t<a class=\"vector-toc-link\" href=\"#References\">\n\t\t\t<div class=\"vector-toc-text\">\n\t\t\t\t<span class=\"vector-toc-numb\">6<\/span>\n\t\t\t\t<span>References<\/span>\n\t\t\t<\/div>\n\t\t<\/a>\n\t\t\n\t\t<ul id=\"rdp-we-toc-References-sublist\" class=\"vector-toc-list\">\n\t\t<\/ul>\n\t<\/li>\n\t<li id=\"rdp-we-toc-External_links\"\n\t\tclass=\"vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded\">\n\t\t<a class=\"vector-toc-link\" href=\"#External_links\">\n\t\t\t<div class=\"vector-toc-text\">\n\t\t\t\t<span class=\"vector-toc-numb\">7<\/span>\n\t\t\t\t<span>External links<\/span>\n\t\t\t<\/div>\n\t\t<\/a>\n\t\t\n\t\t<ul id=\"rdp-we-toc-External_links-sublist\" class=\"vector-toc-list\">\n\t\t<\/ul>\n\t<\/li>\n<\/ul>\n<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t<\/nav>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<div class=\"mw-content-container\">\n\t\t\t<main id=\"rdp-we-content\" class=\"mw-body\">\n\t\t\t\t<header class=\"mw-body-header vector-page-titlebar no-font-mode-scale\">\n\t\t\t\t\t<nav aria-label=\"Contents\" class=\"vector-toc-landmark\">\n\t\t\t\t\t\t\n<div id=\"rdp-we-vector-page-titlebar-toc\" class=\"vector-dropdown vector-page-titlebar-toc vector-button-flush-left\"  title=\"Table of Contents\" >\n\t<input type=\"checkbox\" id=\"rdp-we-vector-page-titlebar-toc-checkbox\" role=\"button\" aria-haspopup=\"true\" data-event-name=\"ui.dropdown-vector-page-titlebar-toc\" class=\"vector-dropdown-checkbox\"  aria-label=\"Toggle the table of contents\"  >\n\t<label id=\"rdp-we-vector-page-titlebar-toc-label\" for=\"vector-page-titlebar-toc-checkbox\" class=\"vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only\" aria-hidden=\"true\"  ><span class=\"vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet\"><\/span>\n\n<span class=\"vector-dropdown-label-text\">Toggle the table of contents<\/span>\n\t<\/label>\n\t<div class=\"vector-dropdown-content\">\n\n\n\t\t\t\t\t\t\t<div id=\"rdp-we-vector-page-titlebar-toc-unpinned-container\" class=\"vector-unpinned-container\">\n\t\t\t<\/div>\n\t\t\n\t<\/div>\n<\/div>\n\n\t\t\t\t\t<\/nav>\n\t\t\t\t\t\n\t\t\t\t\t\t\t\n<div id=\"rdp-we-p-lang-btn\" class=\"vector-dropdown mw-portlet mw-portlet-lang\"  >\n\t<input type=\"checkbox\" id=\"rdp-we-p-lang-btn-checkbox\" role=\"button\" aria-haspopup=\"true\" data-event-name=\"ui.dropdown-p-lang-btn\" class=\"vector-dropdown-checkbox mw-interlanguage-selector\" aria-label=\"Go to an article in another language. Available in 16 languages\"   >\n\t<label id=\"rdp-we-p-lang-btn-label\" for=\"p-lang-btn-checkbox\" class=\"vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-16\" aria-hidden=\"true\"  ><span class=\"vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive\"><\/span>\n\n<span class=\"vector-dropdown-label-text\">16 languages<\/span>\n\t<\/label>\n\t<div class=\"vector-dropdown-content\">\n\n\t\t<div class=\"vector-menu-content\">\n\t\t\t\n\t\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t\t\n\t\t\t\t<li class=\"interlanguage-link interwiki-af mw-list-item\"><a href=\"https:\/\/af.wikipedia.org\/wiki\/Langstekelseekastaiing\" title=\"Langstekelseekastaiing \u2013 Afrikaans\" lang=\"af\" hreflang=\"af\" data-title=\"Langstekelseekastaiing\" data-language-autonym=\"Afrikaans\" data-language-local-name=\"Afrikaans\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>Afrikaans<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-ceb mw-list-item\"><a href=\"https:\/\/ceb.wikipedia.org\/wiki\/Diadema_setosum\" title=\"Diadema setosum \u2013 Cebuano\" lang=\"ceb\" hreflang=\"ceb\" data-title=\"Diadema setosum\" data-language-autonym=\"Cebuano\" data-language-local-name=\"Cebuano\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>Cebuano<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-de mw-list-item\"><a href=\"https:\/\/de.wikipedia.org\/wiki\/Gew%C3%B6hnlicher_Diademseeigel\" title=\"Gew\u00f6hnlicher Diademseeigel \u2013 German\" lang=\"de\" hreflang=\"de\" data-title=\"Gew\u00f6hnlicher Diademseeigel\" data-language-autonym=\"Deutsch\" data-language-local-name=\"German\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>Deutsch<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-el mw-list-item\"><a href=\"https:\/\/el.wikipedia.org\/wiki\/%CE%9C%CE%B1%CE%BA%CF%81%CE%AC%CE%BA%CE%B1%CE%BD%CE%B8%CE%BF%CF%82_%CE%B1%CF%87%CE%B9%CE%BD%CF%8C%CF%82\" title=\"\u039c\u03b1\u03ba\u03c1\u03ac\u03ba\u03b1\u03bd\u03b8\u03bf\u03c2 \u03b1\u03c7\u03b9\u03bd\u03cc\u03c2 \u2013 Greek\" lang=\"el\" hreflang=\"el\" data-title=\"\u039c\u03b1\u03ba\u03c1\u03ac\u03ba\u03b1\u03bd\u03b8\u03bf\u03c2 \u03b1\u03c7\u03b9\u03bd\u03cc\u03c2\" data-language-autonym=\"\u0395\u03bb\u03bb\u03b7\u03bd\u03b9\u03ba\u03ac\" data-language-local-name=\"Greek\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>\u0395\u03bb\u03bb\u03b7\u03bd\u03b9\u03ba\u03ac<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-es mw-list-item\"><a href=\"https:\/\/es.wikipedia.org\/wiki\/Diadema_setosum\" title=\"Diadema setosum \u2013 Spanish\" lang=\"es\" hreflang=\"es\" data-title=\"Diadema setosum\" data-language-autonym=\"Espa\u00f1ol\" data-language-local-name=\"Spanish\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>Espa\u00f1ol<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-et mw-list-item\"><a href=\"https:\/\/et.wikipedia.org\/wiki\/Pikaokkaline_diadeemsiilik\" title=\"Pikaokkaline diadeemsiilik \u2013 Estonian\" lang=\"et\" hreflang=\"et\" data-title=\"Pikaokkaline diadeemsiilik\" data-language-autonym=\"Eesti\" data-language-local-name=\"Estonian\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>Eesti<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-fi mw-list-item\"><a href=\"https:\/\/fi.wikipedia.org\/wiki\/Diadema_setosum\" title=\"Diadema setosum \u2013 Finnish\" lang=\"fi\" hreflang=\"fi\" data-title=\"Diadema setosum\" data-language-autonym=\"Suomi\" data-language-local-name=\"Finnish\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>Suomi<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-fr mw-list-item\"><a href=\"https:\/\/fr.wikipedia.org\/wiki\/Diadema_setosum\" title=\"Diadema setosum \u2013 French\" lang=\"fr\" hreflang=\"fr\" data-title=\"Diadema setosum\" data-language-autonym=\"Fran\u00e7ais\" data-language-local-name=\"French\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>Fran\u00e7ais<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-he mw-list-item\"><a href=\"https:\/\/he.wikipedia.org\/wiki\/%D7%A0%D7%96%D7%A8%D7%99%D7%AA_%D7%90%D7%A8%D7%95%D7%9B%D7%AA-%D7%A7%D7%95%D7%A6%D7%99%D7%9D\" title=\"\u05e0\u05d6\u05e8\u05d9\u05ea \u05d0\u05e8\u05d5\u05db\u05ea-\u05e7\u05d5\u05e6\u05d9\u05dd \u2013 Hebrew\" lang=\"he\" hreflang=\"he\" data-title=\"\u05e0\u05d6\u05e8\u05d9\u05ea \u05d0\u05e8\u05d5\u05db\u05ea-\u05e7\u05d5\u05e6\u05d9\u05dd\" data-language-autonym=\"\u05e2\u05d1\u05e8\u05d9\u05ea\" data-language-local-name=\"Hebrew\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>\u05e2\u05d1\u05e8\u05d9\u05ea<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-hu mw-list-item\"><a href=\"https:\/\/hu.wikipedia.org\/wiki\/Diadema_setosum\" title=\"Diadema setosum \u2013 Hungarian\" lang=\"hu\" hreflang=\"hu\" data-title=\"Diadema setosum\" data-language-autonym=\"Magyar\" data-language-local-name=\"Hungarian\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>Magyar<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-it mw-list-item\"><a href=\"https:\/\/it.wikipedia.org\/wiki\/Diadema_setosum\" title=\"Diadema setosum \u2013 Italian\" lang=\"it\" hreflang=\"it\" data-title=\"Diadema setosum\" data-language-autonym=\"Italiano\" data-language-local-name=\"Italian\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>Italiano<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-ja mw-list-item\"><a href=\"https:\/\/ja.wikipedia.org\/wiki\/%E3%82%AC%E3%83%B3%E3%82%AC%E3%82%BC\" title=\"\u30ac\u30f3\u30ac\u30bc \u2013 Japanese\" lang=\"ja\" hreflang=\"ja\" data-title=\"\u30ac\u30f3\u30ac\u30bc\" data-language-autonym=\"\u65e5\u672c\u8a9e\" data-language-local-name=\"Japanese\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>\u65e5\u672c\u8a9e<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-nl mw-list-item\"><a href=\"https:\/\/nl.wikipedia.org\/wiki\/Diadeemzee-egel\" title=\"Diadeemzee-egel \u2013 Dutch\" lang=\"nl\" hreflang=\"nl\" data-title=\"Diadeemzee-egel\" data-language-autonym=\"Nederlands\" data-language-local-name=\"Dutch\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>Nederlands<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-pt mw-list-item\"><a href=\"https:\/\/pt.wikipedia.org\/wiki\/Diadema_setosum\" title=\"Diadema setosum \u2013 Portuguese\" lang=\"pt\" hreflang=\"pt\" data-title=\"Diadema setosum\" data-language-autonym=\"Portugu\u00eas\" data-language-local-name=\"Portuguese\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>Portugu\u00eas<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-ru mw-list-item\"><a href=\"https:\/\/ru.wikipedia.org\/wiki\/Diadema_setosum\" title=\"Diadema setosum \u2013 Russian\" lang=\"ru\" hreflang=\"ru\" data-title=\"Diadema setosum\" data-language-autonym=\"\u0420\u0443\u0441\u0441\u043a\u0438\u0439\" data-language-local-name=\"Russian\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>\u0420\u0443\u0441\u0441\u043a\u0438\u0439<\/span><\/a><\/li><li class=\"interlanguage-link interwiki-zh mw-list-item\"><a href=\"https:\/\/zh.wikipedia.org\/wiki\/%E5%88%BA%E5%86%A0%E6%B5%B7%E8%86%BD\" title=\"\u523a\u51a0\u6d77\u81bd \u2013 Chinese\" lang=\"zh\" hreflang=\"zh\" data-title=\"\u523a\u51a0\u6d77\u81bd\" data-language-autonym=\"\u4e2d\u6587\" data-language-local-name=\"Chinese\" class=\"interlanguage-link-target wiki-link\" target=\"_new\"><span>\u4e2d\u6587<\/span><\/a><\/li>\n\t\t\t<\/ul>\n\t\t\t<div class=\"after-portlet after-portlet-lang\"><span class=\"wb-langlinks-edit wb-langlinks-link\">Edit links<\/span><\/div>\n\t\t<\/div>\n\n\t<\/div>\n<\/div>\n<\/header>\n\t\t\t\t<div class=\"vector-page-toolbar vector-feature-custom-font-size-clientpref--excluded\">\n\t\t\t\t\t<div class=\"vector-page-toolbar-container\">\n\t\t\t\t\t\t<div id=\"rdp-we-left-navigation\">\n\t\t\t\t\t\t\t<nav aria-label=\"Namespaces\">\n\t\t\t\t\t\t\t\t\n<div id=\"rdp-we-p-associated-pages\" class=\"vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages\"  >\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t\n\t\t\t<li id=\"rdp-we-ca-nstab-main\" class=\"selected vector-tab-noicon mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Diadema_setosum\" title=\"View the content page [c]\" accesskey=\"c\" target=\"_new\" class=\"wiki-link\"><span>Article<\/span><\/a><\/li><li id=\"rdp-we-ca-talk\" class=\"vector-tab-noicon mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Talk:Diadema_setosum\" rel=\"discussion\" title=\"Discuss improvements to the content page [t]\" accesskey=\"t\" target=\"_new\" class=\"wiki-link\"><span>Talk<\/span><\/a><\/li>\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n\t\t\t\t\t\t\t\t\n<div id=\"rdp-we-vector-variants-dropdown\" class=\"vector-dropdown emptyPortlet\"  >\n\t<input type=\"checkbox\" id=\"rdp-we-vector-variants-dropdown-checkbox\" role=\"button\" aria-haspopup=\"true\" data-event-name=\"ui.dropdown-vector-variants-dropdown\" class=\"vector-dropdown-checkbox\" aria-label=\"Change language variant\"   >\n\t<label id=\"rdp-we-vector-variants-dropdown-label\" for=\"vector-variants-dropdown-checkbox\" class=\"vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet\" aria-hidden=\"true\"  ><span class=\"vector-dropdown-label-text\">English<\/span>\n\t<\/label>\n\t<div class=\"vector-dropdown-content\">\n\n\n\t\t\t\t\t\n<div id=\"rdp-we-p-variants\" class=\"vector-menu mw-portlet mw-portlet-variants emptyPortlet\"  >\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t\n\t\t\t\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n\t\t\t\t\n\t<\/div>\n<\/div>\n\n\t\t\t\t\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<div id=\"rdp-we-right-navigation\" class=\"vector-collapsible\">\n\t\t\t\t\t\t\t<nav aria-label=\"Views\">\n\t\t\t\t\t\t\t\t\n<div id=\"rdp-we-p-views\" class=\"vector-menu vector-menu-tabs mw-portlet mw-portlet-views\"  >\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t\n\t\t\t<li id=\"rdp-we-ca-view\" class=\"selected vector-tab-noicon mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Diadema_setosum\" target=\"_new\" class=\"wiki-link\"><span>Read<\/span><\/a><\/li><li id=\"rdp-we-ca-edit\" class=\"vector-tab-noicon mw-list-item\"><\/li><li id=\"rdp-we-ca-history\" class=\"vector-tab-noicon mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/w\/index.php?title=Diadema_setosum&action=history\" title=\"Past revisions of this page [h]\" accesskey=\"h\" target=\"_new\" class=\"wiki-link\"><span>View history<\/span><\/a><\/li>\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n\t\t\t\t\t\t\t<\/nav>\n\t\t\t\t\n\t\t\t\t\t\t\t<nav class=\"vector-page-tools-landmark\" aria-label=\"Page tools\">\n\t\t\t\t\t\t\t\t\n<div id=\"rdp-we-vector-page-tools-dropdown\" class=\"vector-dropdown vector-page-tools-dropdown\"  >\n\t<input type=\"checkbox\" id=\"rdp-we-vector-page-tools-dropdown-checkbox\" role=\"button\" aria-haspopup=\"true\" data-event-name=\"ui.dropdown-vector-page-tools-dropdown\" class=\"vector-dropdown-checkbox\"  aria-label=\"Tools\"  >\n\t<label id=\"rdp-we-vector-page-tools-dropdown-label\" for=\"vector-page-tools-dropdown-checkbox\" class=\"vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet\" aria-hidden=\"true\"  ><span class=\"vector-dropdown-label-text\">Tools<\/span>\n\t<\/label>\n\t<div class=\"vector-dropdown-content\">\n\n\n\t\t\t\t\t\t\t\t\t<div id=\"rdp-we-vector-page-tools-unpinned-container\" class=\"vector-unpinned-container\">\n\t\t\t\t\t\t\n<div id=\"rdp-we-vector-page-tools\" class=\"vector-page-tools vector-pinnable-element\">\n\t<div\n\tclass=\"vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned\"\n\tdata-feature-name=\"page-tools-pinned\"\n\tdata-pinnable-element-id=\"vector-page-tools\"\n\tdata-pinned-container-id=\"vector-page-tools-pinned-container\"\n\tdata-unpinned-container-id=\"vector-page-tools-unpinned-container\"\n>\n\t<div class=\"vector-pinnable-header-label\">Tools<\/div>\n\t<button class=\"vector-pinnable-header-toggle-button vector-pinnable-header-pin-button\" data-event-name=\"pinnable-header.vector-page-tools.pin\">move to sidebar<\/button>\n\t<button class=\"vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button\" data-event-name=\"pinnable-header.vector-page-tools.unpin\">hide<\/button>\n<\/div>\n\n\t\n<div id=\"rdp-we-p-cactions\" class=\"vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items\"  >\n\t<div class=\"vector-menu-heading\">\n\t\tActions\n\t<\/div>\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t<li id=\"rdp-we-ca-more-view\" class=\"selected vector-more-collapsible-item mw-list-item\"><a data-mw-interface href=\"https:\/\/en.wikipedia.org\/wiki\/Diadema_setosum\" class=\" wiki-link\" target=\"_new\"><span>Read<\/span><\/a>\n<\/li>\n<li id=\"rdp-we-ca-more-edit\" class=\"vector-more-collapsible-item mw-list-item\">\n<\/li>\n<li id=\"rdp-we-ca-more-history\" class=\"vector-more-collapsible-item mw-list-item\"><a data-mw-interface href=\"https:\/\/en.wikipedia.org\/w\/index.php?title=Diadema_setosum&action=history\" class=\" wiki-link\" target=\"_new\"><span>View history<\/span><\/a>\n<\/li>\n\n\t\t\t\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n<div id=\"rdp-we-p-tb\" class=\"vector-menu mw-portlet mw-portlet-tb\"  >\n\t<div class=\"vector-menu-heading\">\n\t\tGeneral\n\t<\/div>\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t\n\t\t\t<li id=\"rdp-we-t-whatlinkshere\" class=\"mw-list-item\"><span>What links here<\/span><\/li><li id=\"rdp-we-t-recentchangeslinked\" class=\"mw-list-item\"><span>Related changes<\/span><\/li><li id=\"rdp-we-t-upload\" class=\"mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wikipedia:File_Upload_Wizard\" title=\"Upload files [u]\" accesskey=\"u\" target=\"_new\" class=\"wiki-link\"><span>Upload file<\/span><\/a><\/li><li id=\"rdp-we-t-permalink\" class=\"mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/w\/index.php?title=Diadema_setosum&oldid=1349641018\" title=\"Permanent link to this revision of this page\" target=\"_new\" class=\"wiki-link\"><span>Permanent link<\/span><\/a><\/li><li id=\"rdp-we-t-info\" class=\"mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/w\/index.php?title=Diadema_setosum&action=info\" title=\"More information about this page\" target=\"_new\" class=\"wiki-link\"><span>Page information<\/span><\/a><\/li><li id=\"rdp-we-t-cite\" class=\"mw-list-item\"><span>Cite this page<\/span><\/li><li id=\"rdp-we-t-urlshortener\" class=\"mw-list-item\"><span>Get shortened URL<\/span><\/li>\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n<div id=\"rdp-we-p-coll-print_export\" class=\"vector-menu mw-portlet mw-portlet-coll-print_export\"  >\n\t<div class=\"vector-menu-heading\">\n\t\tPrint\/export\n\t<\/div>\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t\n\t\t\t<li id=\"rdp-we-coll-download-as-rl\" class=\"mw-list-item\"><span>Download as PDF<\/span><\/li><li id=\"rdp-we-t-print\" class=\"mw-list-item\"><a href=\"https:\/\/en.wikipedia.org\/w\/index.php?title=Diadema_setosum&printable=yes\" title=\"Printable version of this page [p]\" accesskey=\"p\" target=\"_new\" class=\"wiki-link\"><span>Printable version<\/span><\/a><\/li>\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n<div id=\"rdp-we-p-wikibase-otherprojects\" class=\"vector-menu mw-portlet mw-portlet-wikibase-otherprojects\"  >\n\t<div class=\"vector-menu-heading\">\n\t\tIn other projects\n\t<\/div>\n\t<div class=\"vector-menu-content\">\n\t\t\n\t\t<ul class=\"vector-menu-content-list\">\n\t\t\t\n\t\t\t<li class=\"wb-otherproject-link wb-otherproject-commons mw-list-item\"><a href=\"https:\/\/commons.wikimedia.org\/wiki\/Diadema_setosum\" hreflang=\"en\" target=\"_new\" class=\"wiki-link\"><span>Wikimedia Commons<\/span><\/a><\/li><li class=\"wb-otherproject-link wb-otherproject-species mw-list-item\"><a href=\"https:\/\/species.wikimedia.org\/wiki\/Diadema_setosum\" hreflang=\"en\" target=\"_new\" class=\"wiki-link\"><span>Wikispecies<\/span><\/a><\/li><li id=\"rdp-we-t-wikibase\" class=\"wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item\"><span>Wikidata item<\/span><\/li>\n\t\t<\/ul>\n\t\t\n\t<\/div>\n<\/div>\n\n<\/div>\n\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\n\t<\/div>\n<\/div>\n\n\t\t\t\t\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"vector-column-end no-font-mode-scale\">\n\t\t\t\t\t<div class=\"vector-sticky-pinned-container\">\n\t\t\t\t\t\t<div class=\"wp25eastereggs-vector-sitenotice-landmark\"><\/div>\n\t\t\t\t\t\t<nav class=\"vector-page-tools-landmark\" aria-label=\"Page tools\">\n\t\t\t\t\t\t\t<div id=\"rdp-we-vector-page-tools-pinned-container\" class=\"vector-pinned-container\">\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/nav>\n\t\t\t\t\t\t<nav class=\"vector-appearance-landmark\" aria-label=\"Appearance\">\n\t\t\t\t\t\t\t<div id=\"rdp-we-vector-appearance-pinned-container\" class=\"vector-pinned-container\">\n\t\t\t\t<div id=\"rdp-we-vector-appearance\" class=\"vector-appearance vector-pinnable-element\">\n\t<div\n\tclass=\"vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned\"\n\tdata-feature-name=\"appearance-pinned\"\n\tdata-pinnable-element-id=\"vector-appearance\"\n\tdata-pinned-container-id=\"vector-appearance-pinned-container\"\n\tdata-unpinned-container-id=\"vector-appearance-unpinned-container\"\n>\n\t<div class=\"vector-pinnable-header-label\">Appearance<\/div>\n\t<button class=\"vector-pinnable-header-toggle-button vector-pinnable-header-pin-button\" data-event-name=\"pinnable-header.vector-appearance.pin\">move to sidebar<\/button>\n\t<button class=\"vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button\" data-event-name=\"pinnable-header.vector-appearance.unpin\">hide<\/button>\n<\/div>\n\n\n<\/div>\n\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/nav>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div id=\"rdp-we-bodyContent\" class=\"vector-body\" aria-labelledby=\"firstHeading\" data-mw-ve-target-container>\n\t\t\t\t\t<div class=\"vector-body-before-content\">\n\t\t\t\t\t\t\t\n\n\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t<div id=\"rdp-we-mw-content-text\" class=\"mw-body-content\"><div class=\"mw-subjectpageheader\">\n<\/div><div class=\"mw-content-ltr mw-parser-output\" lang=\"en\" dir=\"ltr\"><div class=\"shortdescription nomobile noexcerpt noprint searchaux\" style=\"display:none\">Species of sea urchin<\/div>\n\n<p class=\"mw-empty-elt\">\n<\/p>\n\n<p><i><b>Diadema setosum<\/b><\/i> is a species of long-spined <a href=\"https:\/\/en.wikipedia.org\/wiki\/Sea_urchin\" title=\"Sea urchin\" target=\"_new\" class=\"wiki-link\">sea urchin<\/a> belonging to the family <a href=\"https:\/\/en.wikipedia.org\/wiki\/Diadematidae\" title=\"Diadematidae\" target=\"_new\" class=\"wiki-link\">Diadematidae<\/a>. It is a typical sea urchin, with extremely long, hollow spines that are mildly <a href=\"https:\/\/en.wikipedia.org\/wiki\/Venom\" title=\"Venom\" target=\"_new\" class=\"wiki-link\">venomous<\/a>. <i>D. setosum<\/i> differs from other <i><a href=\"https:\/\/en.wikipedia.org\/wiki\/Diadema_(echinoderm)\" title=\"Diadema (echinoderm)\" target=\"_new\" class=\"wiki-link\">Diadema<\/a><\/i> with five, characteristic white dots that can be found on its body. The species can be found throughout the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Indo-Pacific\" title=\"Indo-Pacific\" target=\"_new\" class=\"wiki-link\">Indo-Pacific<\/a> region, from <a href=\"https:\/\/en.wikipedia.org\/wiki\/Australia\" title=\"Australia\" target=\"_new\" class=\"wiki-link\">Australia<\/a> and <a href=\"https:\/\/en.wikipedia.org\/wiki\/Africa\" title=\"Africa\" target=\"_new\" class=\"wiki-link\">Africa<\/a> to <a href=\"https:\/\/en.wikipedia.org\/wiki\/Japan\" title=\"Japan\" target=\"_new\" class=\"wiki-link\">Japan<\/a> and the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Red_Sea\" title=\"Red Sea\" target=\"_new\" class=\"wiki-link\">Red Sea<\/a>. Despite being capable of causing painful stings when stepped upon, the urchin is only slightly venomous and does not pose a serious threat to humans.\n<\/p>\n<meta property=\"mw:PageProp\/toc\" \/>\n<div class=\"mw-heading mw-heading2\"><h2 id=\"rdp-we-Description\">Description<\/h2><\/div>\n<p>As a member of the class <a href=\"https:\/\/en.wikipedia.org\/wiki\/Echinoidea\" class=\"mw-redirect wiki-link\" title=\"Echinoidea\" target=\"_new\">Echinoidea<\/a>, the anatomy of <i>Diadema setosum<\/i> is that of a typical <a href=\"https:\/\/en.wikipedia.org\/wiki\/Sea_urchin\" title=\"Sea urchin\" target=\"_new\" class=\"wiki-link\">sea urchin<\/a>. All of the animal's internal organs are enclosed within the near-spherical, black <a href=\"https:\/\/en.wikipedia.org\/wiki\/Test_(biology)\" title=\"Test (biology)\" target=\"_new\" class=\"wiki-link\">test<\/a> that is essentially the body and <a href=\"https:\/\/en.wikipedia.org\/wiki\/Skeleton\" title=\"Skeleton\" target=\"_new\" class=\"wiki-link\">skeleton<\/a> of the organism. However, the body is not perfectly spherical \u2013 <i>Diadema<\/i> tests are slightly dorso-ventrally compressed. Protruding outwards from the central body are the long spines iconic of a sea urchin's appearance. Like the other members of the family <a href=\"https:\/\/en.wikipedia.org\/wiki\/Diadematidae\" title=\"Diadematidae\" target=\"_new\" class=\"wiki-link\">Diadematidae<\/a>, the spines of <i>D. setosum<\/i> are extremely long and narrow in proportion to its body. The spines, often black but sometimes brown-banded, are hollow and contain a mild <a href=\"https:\/\/en.wikipedia.org\/wiki\/Venom\" title=\"Venom\" target=\"_new\" class=\"wiki-link\">venom<\/a>. <i>D. setosum<\/i> can be distinguished from other species in the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Genus\" title=\"Genus\" target=\"_new\" class=\"wiki-link\">genus<\/a> <i>Diadema<\/i> by the presence of five white spots on the animal's test, strategically located between the urchin's <a href=\"https:\/\/en.wikipedia.org\/wiki\/Ambulacral_groove\" class=\"mw-redirect wiki-link\" title=\"Ambulacral groove\" target=\"_new\">ambulacral grooves<\/a>.<sup class=\"noprint Inline-Template Template-Fact\" style=\"white-space:nowrap;\">[<i><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wikipedia:Citation_needed\" title=\"Wikipedia:Citation needed\" target=\"_new\" class=\"wiki-link\"><span title=\"This claim needs references to reliable sources. (June 2025)\">citation needed<\/span><\/a><\/i>]<\/sup>\n<\/p><p>In addition, a clear distinguishing characteristic of the species is the presence of a bright, orange ring around the urchin's <a href=\"https:\/\/en.wiktionary.org\/wiki\/periproctal\" class=\"extiw wiki-link\" title=\"wikt:periproctal\" target=\"_new\">periproctal<\/a> cone (also known as the \"<a href=\"https:\/\/en.wikipedia.org\/wiki\/Anus\" title=\"Anus\" target=\"_new\" class=\"wiki-link\">anal<\/a> cone\"), which is often mistaken for an \"eye\". A few other minor characteristics in <i>D. setosum<\/i> include bluish spots on the organism's genital plates and similar blue spots (<a href=\"https:\/\/en.wikipedia.org\/wiki\/Iridophore\" class=\"mw-redirect wiki-link\" title=\"Iridophore\" target=\"_new\">iridophores<\/a>) arranged in linear fashion along its test. An <a href=\"https:\/\/en.wiktionary.org\/wiki\/apical\" class=\"extiw wiki-link\" title=\"wikt:apical\" target=\"_new\">apical<\/a> ring is absent in the species, along with <a href=\"https:\/\/en.wikipedia.org\/wiki\/Calcareous\" title=\"Calcareous\" target=\"_new\" class=\"wiki-link\">calcareous<\/a> platelets on its apical cone.<sup class=\"noprint Inline-Template\" style=\"margin-left:0.1em; white-space:nowrap;\">[<i><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wikipedia:Please_clarify\" title=\"Wikipedia:Please clarify\" target=\"_new\" class=\"wiki-link\"><span title=\"What are these apical structures (June 2025)\">clarification needed<\/span><\/a><\/i>]<\/sup><sup id=\"rdp-we-cite&#95;ref-2\" class=\"reference\"><a href=\"#cite_note-2\"><span class=\"cite-bracket\">[<\/span>2<span class=\"cite-bracket\">]<\/span><\/a><\/sup><sup id=\"rdp-we-cite&#95;ref-Baki2006&#95;3-0\" class=\"reference\"><a href=\"#cite_note-Baki2006-3\"><span class=\"cite-bracket\">[<\/span>3<span class=\"cite-bracket\">]<\/span><\/a><\/sup><sup id=\"rdp-we-cite&#95;ref-Clark1925&#95;4-0\" class=\"reference\"><a href=\"#cite_note-Clark1925-4\"><span class=\"cite-bracket\">[<\/span>4<span class=\"cite-bracket\">]<\/span><\/a><\/sup> Sexually mature <i>Diadema setosum<\/i> specimens average from 35 to 80 grams (1.2 to 2.8&#160;oz) in weight.<sup id=\"rdp-we-cite&#95;ref-Alsaffar2000&#95;5-0\" class=\"reference\"><a href=\"#cite_note-Alsaffar2000-5\"><span class=\"cite-bracket\">[<\/span>5<span class=\"cite-bracket\">]<\/span><\/a><\/sup> Adults average a size of no more than 70 millimetres (2.8&#160;in) in test <a href=\"https:\/\/en.wikipedia.org\/wiki\/Diameter\" title=\"Diameter\" target=\"_new\" class=\"wiki-link\">diameter<\/a> and around 40 millimetres (1.6&#160;in) high.<sup id=\"rdp-we-cite&#95;ref-Coppard2006&#95;6-0\" class=\"reference\"><a href=\"#cite_note-Coppard2006-6\"><span class=\"cite-bracket\">[<\/span>6<span class=\"cite-bracket\">]<\/span><\/a><\/sup>\n<\/p>\n<ul style=\"text-align:center;\" class=\"gallery mw-gallery-packed\">\n\t\t<li class=\"gallerybox\" style=\"width: 162px\">\n\t\t\t<div class=\"thumb\" style=\"width: 160px;\"><span typeof=\"mw:File\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/File:Searchin%27_for_an_urchin_(Diadema_setosum).jpg\" class=\"mw-file-description wiki-link\" title=\"General look\" target=\"_new\"><img loading=\"lazy\" alt=\"General look\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/6\/6a\/Searchin%27_for_an_urchin_%28Diadema_setosum%29.jpg\/250px-Searchin%27_for_an_urchin_%28Diadema_setosum%29.jpg\" decoding=\"async\" width=\"160\" height=\"120\" class=\"mw-file-element\" \/><\/a><\/span><\/div>\n\t\t\t<div class=\"gallerytext\">General look<\/div>\n\t\t<\/li>\n\t\t<li class=\"gallerybox\" style=\"width: 156.66666666667px\">\n\t\t\t<div class=\"thumb\" style=\"width: 154.66666666667px;\"><span typeof=\"mw:File\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/File:Diadema_setosum_qtl1.jpg\" class=\"mw-file-description wiki-link\" title=\"Detail of the anal papilla.\" target=\"_new\"><img loading=\"lazy\" alt=\"Detail of the anal papilla.\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/b\/b9\/Diadema_setosum_qtl1.jpg\/250px-Diadema_setosum_qtl1.jpg\" decoding=\"async\" width=\"155\" height=\"120\" class=\"mw-file-element\" \/><\/a><\/span><\/div>\n\t\t\t<div class=\"gallerytext\">Detail of the anal papilla. <\/div>\n\t\t<\/li>\n\t\t<li class=\"gallerybox\" style=\"width: 164px\">\n\t\t\t<div class=\"thumb\" style=\"width: 162px;\"><span typeof=\"mw:File\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/File:Diadema_setosum_apex.jpg\" class=\"mw-file-description wiki-link\" title=\"Close-up on the classical characteristics : orange ring, five white spots, blue iridophores.\" target=\"_new\"><img loading=\"lazy\" alt=\"Close-up on the classical characteristics : orange ring, five white spots, blue iridophores.\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/6\/6f\/Diadema_setosum_apex.jpg\/250px-Diadema_setosum_apex.jpg\" decoding=\"async\" width=\"162\" height=\"120\" class=\"mw-file-element\" \/><\/a><\/span><\/div>\n\t\t\t<div class=\"gallerytext\">Close-up on the classical characteristics&#160;: orange ring, five white spots, blue iridophores. <\/div>\n\t\t<\/li>\n\t\t<li class=\"gallerybox\" style=\"width: 182px\">\n\t\t\t<div class=\"thumb\" style=\"width: 180px;\"><span typeof=\"mw:File\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/File:Diadema_setosum_1.jpg\" class=\"mw-file-description wiki-link\" title=\"Specimen with white spines.\" target=\"_new\"><img loading=\"lazy\" alt=\"Specimen with white spines.\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/8\/87\/Diadema_setosum_1.jpg\/330px-Diadema_setosum_1.jpg\" decoding=\"async\" width=\"180\" height=\"120\" class=\"mw-file-element\" \/><\/a><\/span><\/div>\n\t\t\t<div class=\"gallerytext\">Specimen with white spines. <\/div>\n\t\t<\/li>\n<\/ul>\n<div class=\"mw-heading mw-heading2\"><h2 id=\"rdp-we-Distribution_and_habitat\">Distribution and habitat<\/h2><\/div>\n<figure class=\"mw-default-size\" typeof=\"mw:File\/Thumb\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/File:Diadema_setosum_2228x2252.png\" class=\"mw-file-description wiki-link\" target=\"_new\"><img loading=\"lazy\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/0\/06\/Diadema_setosum_2228x2252.png\/250px-Diadema_setosum_2228x2252.png\" decoding=\"async\" width=\"250\" height=\"253\" class=\"mw-file-element\" \/><\/a><figcaption><i>Diadema setosum<\/i>, black spines color-morph<\/figcaption><\/figure>\n<p><i>Diadema setosum<\/i> is a widely distributed species of sea urchin. Its <a href=\"https:\/\/en.wikipedia.org\/wiki\/Range_(biology)\" class=\"mw-redirect wiki-link\" title=\"Range (biology)\" target=\"_new\">range<\/a> stretches throughout the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Indo-Pacific\" title=\"Indo-Pacific\" target=\"_new\" class=\"wiki-link\">Indo-Pacific<\/a> basin including <a href=\"https:\/\/en.wikipedia.org\/wiki\/Malaysia\" title=\"Malaysia\" target=\"_new\" class=\"wiki-link\">Malaysia<\/a>,<sup id=\"rdp-we-cite&#95;ref-Diadema&#95;setosum&#95;7-0\" class=\"reference\"><a href=\"#cite_note-Diadema_setosum-7\"><span class=\"cite-bracket\">[<\/span>7<span class=\"cite-bracket\">]<\/span><\/a><\/sup> <a href=\"https:\/\/en.wikipedia.org\/wiki\/Longitude\" title=\"Longitude\" target=\"_new\" class=\"wiki-link\">longitudinally<\/a> from the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Red_Sea\" title=\"Red Sea\" target=\"_new\" class=\"wiki-link\">Red Sea<\/a> and then eastward to the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Australia\" title=\"Australia\" target=\"_new\" class=\"wiki-link\">Australian<\/a> coast. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Latitude\" title=\"Latitude\" target=\"_new\" class=\"wiki-link\">Latitudinally<\/a>, the species can be found as far north as <a href=\"https:\/\/en.wikipedia.org\/wiki\/Japan\" title=\"Japan\" target=\"_new\" class=\"wiki-link\">Japan<\/a> and its range extends as far south as the southern tip of the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Africa\" title=\"Africa\" target=\"_new\" class=\"wiki-link\">African<\/a> east coast.<sup id=\"rdp-we-cite&#95;ref-Baki2006&#95;3-1\" class=\"reference\"><a href=\"#cite_note-Baki2006-3\"><span class=\"cite-bracket\">[<\/span>3<span class=\"cite-bracket\">]<\/span><\/a><\/sup>\n<\/p><p>The species has been introduced into other localities not within its natural range. In 2006, two living specimens of <i>Diadema setosum<\/i> were found in waters off the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Ka%C5%9F\" title=\"Ka\u015f\" target=\"_new\" class=\"wiki-link\">Ka\u015f<\/a> peninsula in <a href=\"https:\/\/en.wikipedia.org\/wiki\/Turkey\" title=\"Turkey\" target=\"_new\" class=\"wiki-link\">Turkey<\/a>. The discovery and subsequent collection of these individuals makes <i>D. setosum<\/i> the first <a href=\"https:\/\/en.wikipedia.org\/wiki\/Invasive_species\" title=\"Invasive species\" target=\"_new\" class=\"wiki-link\">invasive<\/a> <a href=\"https:\/\/en.wikipedia.org\/wiki\/Erythrea\" class=\"mw-redirect wiki-link\" title=\"Erythrea\" target=\"_new\">Erythrean<\/a> sea urchin in the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Mediterranean\" class=\"mw-redirect wiki-link\" title=\"Mediterranean\" target=\"_new\">Mediterranean<\/a>.<sup id=\"rdp-we-cite&#95;ref-Baki2006&#95;3-2\" class=\"reference\"><a href=\"#cite_note-Baki2006-3\"><span class=\"cite-bracket\">[<\/span>3<span class=\"cite-bracket\">]<\/span><\/a><\/sup> Several hypotheses have been proposed for the finding of these individuals. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Larva\" title=\"Larva\" target=\"_new\" class=\"wiki-link\">Larvae<\/a> of the species may have traveled through the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Suez_Canal\" title=\"Suez Canal\" target=\"_new\" class=\"wiki-link\">Suez Canal<\/a> (<a href=\"https:\/\/en.wikipedia.org\/wiki\/Lessepsian_migration\" title=\"Lessepsian migration\" target=\"_new\" class=\"wiki-link\">Lessepsian migration<\/a>) into the Mediterranean from the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Gulf_of_Suez\" title=\"Gulf of Suez\" target=\"_new\" class=\"wiki-link\">Gulf of Suez<\/a>, where the species has a thriving natural population. Another proposed vector is that of foreign ships bringing in individuals via their <a href=\"https:\/\/en.wikipedia.org\/wiki\/Ballast_tank\" title=\"Ballast tank\" target=\"_new\" class=\"wiki-link\">ballasts<\/a>. A final possibility proposed was that the individual specimens were intentionally released by <a href=\"https:\/\/en.wikipedia.org\/wiki\/Aquarist\" title=\"Aquarist\" target=\"_new\" class=\"wiki-link\">aquarists<\/a>.<sup id=\"rdp-we-cite&#95;ref-Baki2006&#95;3-3\" class=\"reference\"><a href=\"#cite_note-Baki2006-3\"><span class=\"cite-bracket\">[<\/span>3<span class=\"cite-bracket\">]<\/span><\/a><\/sup>\n<\/p><p><i>Diadema setosum<\/i> is commonly associated with <a href=\"https:\/\/en.wikipedia.org\/wiki\/Coral_reef\" title=\"Coral reef\" target=\"_new\" class=\"wiki-link\">coral reefs<\/a>, but is also found on <a href=\"https:\/\/en.wikipedia.org\/wiki\/Sand_flat\" class=\"mw-redirect wiki-link\" title=\"Sand flat\" target=\"_new\">sand flats<\/a> and in <a href=\"https:\/\/en.wikipedia.org\/wiki\/Seagrass\" title=\"Seagrass\" target=\"_new\" class=\"wiki-link\">seagrass<\/a> beds. Along with the other members of the family, <i>D. setosum<\/i> is a prolific <a href=\"https:\/\/en.wikipedia.org\/wiki\/Grazing\" title=\"Grazing\" target=\"_new\" class=\"wiki-link\">grazer<\/a>. They are known to feed on a variety of <a href=\"https:\/\/en.wikipedia.org\/wiki\/Algae\" title=\"Algae\" target=\"_new\" class=\"wiki-link\">algal<\/a> species common on tropical coral reefs. The ecological importance of the taxon as a whole has been stressed because of its herbivorous habits.<sup id=\"rdp-we-cite&#95;ref-Coppard2006&#95;6-1\" class=\"reference\"><a href=\"#cite_note-Coppard2006-6\"><span class=\"cite-bracket\">[<\/span>6<span class=\"cite-bracket\">]<\/span><\/a><\/sup>\n<\/p><p>In <a href=\"https:\/\/en.wikipedia.org\/wiki\/Hong_Kong\" title=\"Hong Kong\" target=\"_new\" class=\"wiki-link\">Hong Kong<\/a>, <i>Diadema setosum<\/i> is omnipresent in rocky reefs, with a population density of up to one individual per 3.4m<sup>2<\/sup>. The unusually large number of these urchins is theorised to be partly natural, and partly due to overfishing of its primary predator in the region, the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Blackspot_tuskfish\" title=\"Blackspot tuskfish\" target=\"_new\" class=\"wiki-link\">blackspot tuskfish<\/a> (<i>Choerodon schoenleinii<\/i>).<sup id=\"rdp-we-cite&#95;ref-8\" class=\"reference\"><a href=\"#cite_note-8\"><span class=\"cite-bracket\">[<\/span>8<span class=\"cite-bracket\">]<\/span><\/a><\/sup>\n<\/p>\n<div class=\"mw-heading mw-heading2\"><h2 id=\"rdp-we-Biology\">Biology<\/h2><\/div>\n<p>The species has been known to spawn both seasonally and year-round depending on the location of the spawning population. It has been suggested that <i>Diadema setosum<\/i> populations are temperature-dependent in their spawning seasonalities. Temperatures higher than 25&#160;\u00b0C (77&#160;\u00b0F) have been cited as a possible spawning cue.<sup id=\"rdp-we-cite&#95;ref-Pearse1974&#95;9-0\" class=\"reference\"><a href=\"#cite_note-Pearse1974-9\"><span class=\"cite-bracket\">[<\/span>9<span class=\"cite-bracket\">]<\/span><\/a><\/sup> Equatorial populations are those recorded to spawn at no particular times throughout the entire year. This is true for the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Philippine\" class=\"mw-redirect wiki-link\" title=\"Philippine\" target=\"_new\">Philippine<\/a> populations of <i>D. setosum<\/i>.<sup id=\"rdp-we-cite&#95;ref-Tuason1979&#95;10-0\" class=\"reference\"><a href=\"#cite_note-Tuason1979-10\"><span class=\"cite-bracket\">[<\/span>10<span class=\"cite-bracket\">]<\/span><\/a><\/sup> For a population in the Persian Gulf, spawning occurs during the months of April to May.<sup id=\"rdp-we-cite&#95;ref-Alsaffar2000&#95;5-1\" class=\"reference\"><a href=\"#cite_note-Alsaffar2000-5\"><span class=\"cite-bracket\">[<\/span>5<span class=\"cite-bracket\">]<\/span><\/a><\/sup> Other cues, such as the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Phases_of_the_moon\" class=\"mw-redirect wiki-link\" title=\"Phases of the moon\" target=\"_new\">phases of the moon<\/a> have been observed to affect the spawning of <i>D. setosum<\/i> populations. The species has been found to trigger spawning events in concordance with the appearance of a <a href=\"https:\/\/en.wikipedia.org\/wiki\/Full_moon\" title=\"Full moon\" target=\"_new\" class=\"wiki-link\">full moon<\/a>.<sup id=\"rdp-we-cite&#95;ref-Lessios1981&#95;11-0\" class=\"reference\"><a href=\"#cite_note-Lessios1981-11\"><span class=\"cite-bracket\">[<\/span>11<span class=\"cite-bracket\">]<\/span><\/a><\/sup> They are broadcast spawners.<sup id=\"rdp-we-cite&#95;ref-Reproduction&#95;of&#95;the&#95;long-spined&#95;sea&#95;urchin&#95;Diadema&#95;setosum&#95;in&#95;the&#95;Gulf&#95;of&#95;Aqaba&#95;12-0\" class=\"reference\"><a href=\"#cite_note-Reproduction_of_the_long-spined_sea_urchin_Diadema_setosum_in_the_Gulf_of_Aqaba-12\"><span class=\"cite-bracket\">[<\/span>12<span class=\"cite-bracket\">]<\/span><\/a><\/sup>\n<\/p><p>Evolutionarily, <i>Diadema setosum<\/i> is considered one of the oldest of the known <a href=\"https:\/\/en.wikipedia.org\/wiki\/Extant_taxon\" class=\"mw-redirect wiki-link\" title=\"Extant taxon\" target=\"_new\">extant<\/a> species in the genus <i>Diadema<\/i>. Genetic analysis of the <i>Diadema<\/i> have placed <i>D. setosum<\/i> at a basal branch on a cladogram, having it as the sister group to all the other remaining members of the genus.<sup id=\"rdp-we-cite&#95;ref-Lessios2001&#95;13-0\" class=\"reference\"><a href=\"#cite_note-Lessios2001-13\"><span class=\"cite-bracket\">[<\/span>13<span class=\"cite-bracket\">]<\/span><\/a><\/sup> Morphological analysis confirms this conclusion, adding weight to the concept of <i>D. setosum<\/i> being the most basal of the <i>Diadema<\/i> and possibly the oldest extant species in the genus.<sup id=\"rdp-we-cite&#95;ref-Coppard2006&#95;6-2\" class=\"reference\"><a href=\"#cite_note-Coppard2006-6\"><span class=\"cite-bracket\">[<\/span>6<span class=\"cite-bracket\">]<\/span><\/a><\/sup>\n<\/p><p>Like other venomous sea urchins, the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Venom\" title=\"Venom\" target=\"_new\" class=\"wiki-link\">venom<\/a> of <i>Diadema setosum<\/i> is only mild and not at all fatal to <a href=\"https:\/\/en.wikipedia.org\/wiki\/Human\" title=\"Human\" target=\"_new\" class=\"wiki-link\">humans<\/a>. The toxin mostly <a href=\"https:\/\/en.wikipedia.org\/wiki\/Sea_urchin_injury\" title=\"Sea urchin injury\" target=\"_new\" class=\"wiki-link\">causes swelling and pain<\/a>, and gradually diffuses over several hours. More danger is presented by the delivery system \u2013 the urchin's spines which are extremely brittle and needle-like. They easily break off within flesh and are quite a challenge to extract.<sup id=\"rdp-we-cite&#95;ref-Williamson1996&#95;14-0\" class=\"reference\"><a href=\"#cite_note-Williamson1996-14\"><span class=\"cite-bracket\">[<\/span>14<span class=\"cite-bracket\">]<\/span><\/a><\/sup>\n<\/p><p>In terms of behavior, <i>D. setosum<\/i> has been observed to be able to avoid danger by rapidly inverting its body and \"running\" on the tips of its longest spines.  This behavior is triggered by sudden impacts and the snapping of one or more of its spines.  During the process, upon encountering small obstacles, <i>D. setosum<\/i> will adopt a <a href=\"https:\/\/en.wikipedia.org\/wiki\/Rotating_locomotion_in_living_systems\" title=\"Rotating locomotion in living systems\" target=\"_new\" class=\"wiki-link\">rolling motion<\/a>.  It has been observed to move 30&#160;in (760 millimetres) in just 7 seconds using this method of locomotion.<sup class=\"noprint Inline-Template Template-Fact\" style=\"white-space:nowrap;\">[<i><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wikipedia:Citation_needed\" title=\"Wikipedia:Citation needed\" target=\"_new\" class=\"wiki-link\"><span title=\"This claim needs references to reliable sources. (June 2025)\">citation needed<\/span><\/a><\/i>]<\/sup>\n<\/p><p>It is also worth noting that this particular variety has some of the very best <a href=\"https:\/\/en.wikipedia.org\/wiki\/Visual_perception\" title=\"Visual perception\" target=\"_new\" class=\"wiki-link\">vision<\/a> observed among sea urchins and will regularly redirect spines toward passing fish as a defense mechanism.  Although unclear, this vision seems to be achieved by the sensing of light that enters each spine and it transmitted down the spines shaft and sensed at the base, although further scientific research is required.<sup class=\"noprint Inline-Template Template-Fact\" style=\"white-space:nowrap;\">[<i><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wikipedia:Citation_needed\" title=\"Wikipedia:Citation needed\" target=\"_new\" class=\"wiki-link\"><span title=\"This claim needs references to reliable sources. (June 2025)\">citation needed<\/span><\/a><\/i>]<\/sup>\n<\/p><p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Goose_barnacle\" title=\"Goose barnacle\" target=\"_new\" class=\"wiki-link\">Goose barnacles<\/a> of the genus <i><a href=\"https:\/\/en.wikipedia.org\/wiki\/Microlepas\" title=\"Microlepas\" target=\"_new\" class=\"wiki-link\">Microlepas<\/a><\/i> are known to <a href=\"https:\/\/en.wikipedia.org\/wiki\/Parasitism\" title=\"Parasitism\" target=\"_new\" class=\"wiki-link\">parasitize<\/a> <i>D. setosum.<\/i><sup id=\"rdp-we-cite&#95;ref-15\" class=\"reference\"><a href=\"#cite_note-15\"><span class=\"cite-bracket\">[<\/span>15<span class=\"cite-bracket\">]<\/span><\/a><\/sup>\n<\/p>\n<div class=\"mw-heading mw-heading2\"><h2 id=\"rdp-we-Gallery\">Gallery<\/h2><\/div>\n<ul style=\"text-align:center;\" class=\"gallery mw-gallery-packed\">\n\t\t<li class=\"gallerybox\" style=\"width: 162px\">\n\t\t\t<div class=\"thumb\" style=\"width: 160px;\"><span typeof=\"mw:File\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/File:Diadema_setosum_in_Zanzibar.jpg\" class=\"mw-file-description wiki-link\" title=\"From Zanzibar\" target=\"_new\"><img loading=\"lazy\" alt=\"From Zanzibar\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/7\/7d\/Diadema_setosum_in_Zanzibar.jpg\/250px-Diadema_setosum_in_Zanzibar.jpg\" decoding=\"async\" width=\"160\" height=\"120\" class=\"mw-file-element\" \/><\/a><\/span><\/div>\n\t\t\t<div class=\"gallerytext\">From <a href=\"https:\/\/en.wikipedia.org\/wiki\/Zanzibar\" title=\"Zanzibar\" target=\"_new\" class=\"wiki-link\">Zanzibar<\/a><\/div>\n\t\t<\/li>\n\t\t<li class=\"gallerybox\" style=\"width: 162.66666666667px\">\n\t\t\t<div class=\"thumb\" style=\"width: 160.66666666667px;\"><span typeof=\"mw:File\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/File:Diadema_setosum_face_aborale.jpg\" class=\"mw-file-description wiki-link\" title=\"From la R\u00e9union\" target=\"_new\"><img loading=\"lazy\" alt=\"From la R\u00e9union\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/9\/9d\/Diadema_setosum_face_aborale.jpg\/250px-Diadema_setosum_face_aborale.jpg\" decoding=\"async\" width=\"161\" height=\"120\" class=\"mw-file-element\" \/><\/a><\/span><\/div>\n\t\t\t<div class=\"gallerytext\">From <a href=\"https:\/\/en.wikipedia.org\/wiki\/La_R%C3%A9union\" class=\"mw-redirect wiki-link\" title=\"La R\u00e9union\" target=\"_new\">la R\u00e9union<\/a><\/div>\n\t\t<\/li>\n\t\t<li class=\"gallerybox\" style=\"width: 162px\">\n\t\t\t<div class=\"thumb\" style=\"width: 160px;\"><span typeof=\"mw:File\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/File:Diadema_setosum_(Kenya).JPG\" class=\"mw-file-description wiki-link\" title=\"A specimen encountered in Kenya. The 5-fold symmetry is obvious.\" target=\"_new\"><img loading=\"lazy\" alt=\"A specimen encountered in Kenya. The 5-fold symmetry is obvious.\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/c\/cb\/Diadema_setosum_%28Kenya%29.JPG\/250px-Diadema_setosum_%28Kenya%29.JPG\" decoding=\"async\" width=\"160\" height=\"120\" class=\"mw-file-element\" \/><\/a><\/span><\/div>\n\t\t\t<div class=\"gallerytext\">A specimen encountered in <a href=\"https:\/\/en.wikipedia.org\/wiki\/Kenya\" title=\"Kenya\" target=\"_new\" class=\"wiki-link\">Kenya<\/a>. The 5-fold symmetry is obvious.<\/div>\n\t\t<\/li>\n\t\t<li class=\"gallerybox\" style=\"width: 182px\">\n\t\t\t<div class=\"thumb\" style=\"width: 180px;\"><span typeof=\"mw:File\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/File:Diadem_urchins.jpg\" class=\"mw-file-description wiki-link\" title=\"D. setosum along with Diadema savignyi : test shape, spines length and orange ring help telling them apart.\" target=\"_new\"><img loading=\"lazy\" alt=\"D. setosum along with Diadema savignyi : test shape, spines length and orange ring help telling them apart.\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/c\/c4\/Diadem_urchins.jpg\/330px-Diadem_urchins.jpg\" decoding=\"async\" width=\"180\" height=\"120\" class=\"mw-file-element\" \/><\/a><\/span><\/div>\n\t\t\t<div class=\"gallerytext\"><i>D. setosum<\/i> along with <i><a href=\"https:\/\/en.wikipedia.org\/wiki\/Diadema_savignyi\" title=\"Diadema savignyi\" target=\"_new\" class=\"wiki-link\">Diadema savignyi<\/a><\/i>&#160;: test shape, spines length and orange ring help telling them apart. <\/div>\n\t\t<\/li>\n\t\t<li class=\"gallerybox\" style=\"width: 145.33333333333px\">\n\t\t\t<div class=\"thumb\" style=\"width: 143.33333333333px;\"><span typeof=\"mw:File\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/File:Diademseeigel.jpg\" class=\"mw-file-description wiki-link\" title=\"A classical specimen with long, black spines. The characteristic orange ring is visible in the photo.\" target=\"_new\"><img loading=\"lazy\" alt=\"A classical specimen with long, black spines. The characteristic orange ring is visible in the photo.\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/2\/2b\/Diademseeigel.jpg\/250px-Diademseeigel.jpg\" decoding=\"async\" width=\"144\" height=\"120\" class=\"mw-file-element\" \/><\/a><\/span><\/div>\n\t\t\t<div class=\"gallerytext\">A classical specimen with long, black spines. The characteristic orange ring is visible in the photo.<\/div>\n\t\t<\/li>\n<\/ul>\n<div class=\"mw-heading mw-heading2\"><h2 id=\"rdp-we-Bibliography\">Bibliography<\/h2><\/div>\n\n<ul><li><cite id=\"rdp-we-CITEREFAlsaffarKhalid&#95;P.&#95;Lone2000\" class=\"citation journal cs1\">Alsaffar, Adel H.; Khalid P. Lone (2000). \"Reproductive cycles of <i>Diadema setosum<\/i> and <i>Echinometra mathaei<\/i> (Echinoidea: Echinodermata) from Kuwait (Northern Arabian Gulf)\". <i>Bulletin of Marine Science<\/i>. <b>67<\/b> (2): <span class=\"nowrap\">845\u2013<\/span>856.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Bulletin+of+Marine+Science&amp;rft.atitle=Reproductive+cycles+of+Diadema+setosum+and+Echinometra+mathaei+%28Echinoidea%3A+Echinodermata%29+from+Kuwait+%28Northern+Arabian+Gulf%29&amp;rft.volume=67&amp;rft.issue=2&amp;rft.pages=845-856&amp;rft.date=2000&amp;rft.aulast=Alsaffar&amp;rft.aufirst=Adel+H.&amp;rft.au=Khalid+P.+Lone&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/li><\/ul>\n<div class=\"mw-heading mw-heading2\"><h2 id=\"rdp-we-References\">References<\/h2><\/div>\n<div class=\"mw-references-wrap mw-references-columns reflist-columns-2\"><ol class=\"references\">\n<li id=\"rdp-we-cite&#95;note-WoRMS-1\"><span class=\"mw-cite-backlink\">^ <a href=\"#cite_ref-WoRMS_1-0\"><sup><i><b>a<\/b><\/i><\/sup><\/a> <a href=\"#cite_ref-WoRMS_1-1\"><sup><i><b>b<\/b><\/i><\/sup><\/a><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite id=\"rdp-we-CITEREFKroh,&#95;Andreas2013\" class=\"citation web cs1\">Kroh, Andreas (2013). Kroh A, Mooi R (eds.). <a rel=\"external_link\" class=\"external text\" href=\"https:\/\/www.marinespecies.org\/aphia.php?p=taxdetails&id=213372\" target=\"_new\">\"<i>Diadema setosum<\/i> (Leske, 1778)\"<\/a>. <i>World Echinoidea Database<\/i>. <a href=\"https:\/\/en.wikipedia.org\/wiki\/World_Register_of_Marine_Species\" title=\"World Register of Marine Species\" target=\"_new\" class=\"wiki-link\">World Register of Marine Species<\/a><span class=\"reference-accessdate\">. Retrieved <span class=\"nowrap\">2013-11-22<\/span><\/span>.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=World+Echinoidea+Database&amp;rft.atitle=Diadema+setosum+%28Leske%2C+1778%29&amp;rft.date=2013&amp;rft.au=Kroh%2C+Andreas&amp;rft&#95;id=https%3A%2F%2Fwww.marinespecies.org%2Faphia.php%3Fp%3Dtaxdetails%26id%3D213372&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-2\"><span class=\"mw-cite-backlink\"><b><a href=\"#cite_ref-2\">^<\/a><\/b><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite class=\"citation web cs1\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/www.coralacademy.hk\/marine-life-illustration-eng\" target=\"_new\">\"Let's explore our amazing underwater life of Hong Kong!\"<\/a>. <i>Coral Academy<\/i><span class=\"reference-accessdate\">. Retrieved <span class=\"nowrap\">24 January<\/span> 2025<\/span>.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=Coral+Academy&amp;rft.atitle=Let%27s+explore+our+amazing+underwater+life+of+Hong+Kong%21&amp;rft&#95;id=https%3A%2F%2Fwww.coralacademy.hk%2Fmarine-life-illustration-eng&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-Baki2006-3\"><span class=\"mw-cite-backlink\">^ <a href=\"#cite_ref-Baki2006_3-0\"><sup><i><b>a<\/b><\/i><\/sup><\/a> <a href=\"#cite_ref-Baki2006_3-1\"><sup><i><b>b<\/b><\/i><\/sup><\/a> <a href=\"#cite_ref-Baki2006_3-2\"><sup><i><b>c<\/b><\/i><\/sup><\/a> <a href=\"#cite_ref-Baki2006_3-3\"><sup><i><b>d<\/b><\/i><\/sup><\/a><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite id=\"rdp-we-CITEREFYokesBella&#95;S.&#95;Galil2006\" class=\"citation journal cs1\">Yokes, Baki; Bella S. Galil (2006). <a rel=\"external_link\" class=\"external text\" href=\"https:\/\/doi.org\/10.3391%2Fai.2006.1.3.15\" target=\"_new\">\"The first record of the needle-spined urchin <i>Diadema setosum<\/i> (Leske, 1778) (Echinodermata: Echinoidea: Diadematidae) from the Mediterranean Sea\"<\/a>. <i>Aquatic Invasions<\/i>. <b>1<\/b> (3): <span class=\"nowrap\">188\u2013<\/span>190. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Doi_(identifier)\" class=\"mw-redirect wiki-link\" title=\"Doi (identifier)\" target=\"_new\">doi<\/a>:<span class=\"id-lock-free\" title=\"Freely accessible\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/doi.org\/10.3391%2Fai.2006.1.3.15\" target=\"_new\">10.3391\/ai.2006.1.3.15<\/a><\/span>.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Aquatic+Invasions&amp;rft.atitle=The+first+record+of+the+needle-spined+urchin+Diadema+setosum+%28Leske%2C+1778%29+%28Echinodermata%3A+Echinoidea%3A+Diadematidae%29+from+the+Mediterranean+Sea&amp;rft.volume=1&amp;rft.issue=3&amp;rft.pages=188-190&amp;rft.date=2006&amp;rft&#95;id=info%3Adoi%2F10.3391%2Fai.2006.1.3.15&amp;rft.aulast=Yokes&amp;rft.aufirst=Baki&amp;rft.au=Bella+S.+Galil&amp;rft&#95;id=https%3A%2F%2Fdoi.org%2F10.3391%252Fai.2006.1.3.15&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-Clark1925-4\"><span class=\"mw-cite-backlink\"><b><a href=\"#cite_ref-Clark1925_4-0\">^<\/a><\/b><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite id=\"rdp-we-CITEREFClark1925\" class=\"citation book cs1\">Clark, HL (1925). <i>A catalogue of the recent sea-urchins (Echinoidea) in the collection of the British Museum (Natural History)<\/i>. London: British Museum. p.&#160;250.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=A+catalogue+of+the+recent+sea-urchins+%28Echinoidea%29+in+the+collection+of+the+British+Museum+%28Natural+History%29&amp;rft.place=London&amp;rft.pages=250&amp;rft.pub=British+Museum&amp;rft.date=1925&amp;rft.aulast=Clark&amp;rft.aufirst=HL&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-Alsaffar2000-5\"><span class=\"mw-cite-backlink\">^ <a href=\"#cite_ref-Alsaffar2000_5-0\"><sup><i><b>a<\/b><\/i><\/sup><\/a> <a href=\"#cite_ref-Alsaffar2000_5-1\"><sup><i><b>b<\/b><\/i><\/sup><\/a><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite id=\"rdp-we-CITEREFAlsaffarKhalid&#95;P.&#95;Lone2000\" class=\"citation journal cs1\">Alsaffar, Adel H.; Khalid P. Lone (2000). \"Reproductive cycles of <i>Diadema setosum<\/i> and <i>Echinometra mathaei<\/i> (Echinoidea: Echinodermata) from Kuwait (Northern Arabian Gulf)\". <i>Bulletin of Marine Science<\/i>. <b>67<\/b> (2): <span class=\"nowrap\">845\u2013<\/span>856.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Bulletin+of+Marine+Science&amp;rft.atitle=Reproductive+cycles+of+Diadema+setosum+and+Echinometra+mathaei+%28Echinoidea%3A+Echinodermata%29+from+Kuwait+%28Northern+Arabian+Gulf%29&amp;rft.volume=67&amp;rft.issue=2&amp;rft.pages=845-856&amp;rft.date=2000&amp;rft.aulast=Alsaffar&amp;rft.aufirst=Adel+H.&amp;rft.au=Khalid+P.+Lone&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-Coppard2006-6\"><span class=\"mw-cite-backlink\">^ <a href=\"#cite_ref-Coppard2006_6-0\"><sup><i><b>a<\/b><\/i><\/sup><\/a> <a href=\"#cite_ref-Coppard2006_6-1\"><sup><i><b>b<\/b><\/i><\/sup><\/a> <a href=\"#cite_ref-Coppard2006_6-2\"><sup><i><b>c<\/b><\/i><\/sup><\/a><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite id=\"rdp-we-CITEREFCoppardAndrew&#95;C.&#95;Campbell2006\" class=\"citation journal cs1\">Coppard, Simon Edward; Andrew C. Campbell (2006). <a rel=\"external_link\" class=\"external text\" href=\"https:\/\/web.archive.org\/web\/20061127101511\/http:\/\/www.mnhn.fr\/museum\/front\/medias\/publication\/7662_zoo06n1a6.pdf\" target=\"_new\">\"Taxonomic significance of test morphology in the echinoid genera <i>Diadema<\/i> Gray, 1825 and <i>Echinothrix<\/i> Peters, 1853 (Echinodermata)\"<\/a> <span class=\"cs1-format\">(PDF)<\/span>. <i>Zoosystema<\/i>. <b>28<\/b> (1): <span class=\"nowrap\">93\u2013<\/span>112. Archived from <a rel=\"external_link\" class=\"external text\" href=\"http:\/\/www.mnhn.fr\/museum\/front\/medias\/publication\/7662_zoo06n1a6.pdf\" target=\"_new\">the original<\/a> <span class=\"cs1-format\">(PDF)<\/span> on 2006-11-27<span class=\"reference-accessdate\">. Retrieved <span class=\"nowrap\">2009-01-12<\/span><\/span>.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Zoosystema&amp;rft.atitle=Taxonomic+significance+of+test+morphology+in+the+echinoid+genera+Diadema+Gray%2C+1825+and+Echinothrix+Peters%2C+1853+%28Echinodermata%29&amp;rft.volume=28&amp;rft.issue=1&amp;rft.pages=93-112&amp;rft.date=2006&amp;rft.aulast=Coppard&amp;rft.aufirst=Simon+Edward&amp;rft.au=Andrew+C.+Campbell&amp;rft&#95;id=http%3A%2F%2Fwww.mnhn.fr%2Fmuseum%2Ffront%2Fmedias%2Fpublication%2F7662&#95;zoo06n1a6.pdf&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-Diadema&#95;setosum-7\"><span class=\"mw-cite-backlink\"><b><a href=\"#cite_ref-Diadema_setosum_7-0\">^<\/a><\/b><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite id=\"rdp-we-CITEREFRahmanAb&#95;LahWan&#95;HussinIdris2023\" class=\"citation journal cs1\">Rahman, Raihana Abdul; Ab Lah, Roslizawati; Wan Hussin, Wan Mohd Rauhan; Idris, Mohd Hanafi; Al-Asif, Abdulla-; Anuar, Ummi Nazatun Amira Saiful (31 January 2023). <a rel=\"external_link\" class=\"external text\" href=\"https:\/\/doi.org\/10.35370%2Fbjost.2023.5.1-04\" target=\"_new\">\"Proximate and mineral composition of the long-spined Sea urchin (Diadema setosum) roe\"<\/a>. <i>Borneo Journal of Sciences and Technology<\/i>. <b>05<\/b> (1): <span class=\"nowrap\">30\u2013<\/span>39. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Doi_(identifier)\" class=\"mw-redirect wiki-link\" title=\"Doi (identifier)\" target=\"_new\">doi<\/a>:<span class=\"id-lock-free\" title=\"Freely accessible\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/doi.org\/10.35370%2Fbjost.2023.5.1-04\" target=\"_new\">10.35370\/bjost.2023.5.1-04<\/a><\/span>.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Borneo+Journal+of+Sciences+and+Technology&amp;rft.atitle=Proximate+and+mineral+composition+of+the+long-spined+Sea+urchin+%28Diadema+setosum%29+roe&amp;rft.volume=05&amp;rft.issue=1&amp;rft.pages=30-39&amp;rft.date=2023-01-31&amp;rft&#95;id=info%3Adoi%2F10.35370%2Fbjost.2023.5.1-04&amp;rft.aulast=Rahman&amp;rft.aufirst=Raihana+Abdul&amp;rft.au=Ab+Lah%2C+Roslizawati&amp;rft.au=Wan+Hussin%2C+Wan+Mohd+Rauhan&amp;rft.au=Idris%2C+Mohd+Hanafi&amp;rft.au=Al-Asif%2C+Abdulla-&amp;rft.au=Anuar%2C+Ummi+Nazatun+Amira+Saiful&amp;rft&#95;id=https%3A%2F%2Fdoi.org%2F10.35370%252Fbjost.2023.5.1-04&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-8\"><span class=\"mw-cite-backlink\"><b><a href=\"#cite_ref-8\">^<\/a><\/b><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite class=\"citation web cs1\"><a rel=\"external_link\" class=\"external text\" href=\"http:\/\/www.biosch.hku.hk\/ecology\/porcupine\/por28\/28-vert-urchin.htm\" target=\"_new\">\"Diadema sea urchins and the Black-spot tuskfish\"<\/a>.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=unknown&amp;rft.btitle=Diadema+sea+urchins+and+the+Black-spot+tuskfish&amp;rft&#95;id=http%3A%2F%2Fwww.biosch.hku.hk%2Fecology%2Fporcupine%2Fpor28%2F28-vert-urchin.htm&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-Pearse1974-9\"><span class=\"mw-cite-backlink\"><b><a href=\"#cite_ref-Pearse1974_9-0\">^<\/a><\/b><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite id=\"rdp-we-CITEREFPearse1974\" class=\"citation journal cs1\">Pearse, John S. (1974). <a rel=\"external_link\" class=\"external text\" href=\"http:\/\/www.reefbase.org\/download\/download.aspx?type=1&docid=8619\" target=\"_new\">\"Reproductive patterns of tropical reef animals: three species of sea urchins\"<\/a>. <i>Proceedings of the 2nd International Coral Reef Symposium<\/i>. <b>1<\/b>. Brisbane, Australia: ICRS: <span class=\"nowrap\">235\u2013<\/span>240<span class=\"reference-accessdate\">. Retrieved <span class=\"nowrap\">2009-01-12<\/span><\/span>.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Proceedings+of+the+2nd+International+Coral+Reef+Symposium&amp;rft.atitle=Reproductive+patterns+of+tropical+reef+animals%3A+three+species+of+sea+urchins&amp;rft.volume=1&amp;rft.pages=235-240&amp;rft.date=1974&amp;rft.aulast=Pearse&amp;rft.aufirst=John+S.&amp;rft&#95;id=http%3A%2F%2Fwww.reefbase.org%2Fdownload%2Fdownload.aspx%3Ftype%3D1%26docid%3D8619&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-Tuason1979-10\"><span class=\"mw-cite-backlink\"><b><a href=\"#cite_ref-Tuason1979_10-0\">^<\/a><\/b><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite id=\"rdp-we-CITEREFTuasonEd&#95;D.&#95;Gomez1979\" class=\"citation journal cs1\">Tuason, A. Y.; Ed D. Gomez (1979). \"The reproductive biology of <i>Tripneustes gratilla<\/i> Linnaeus (Echinodermata: Echinoidea), with some notes on Diadema setosum\". <i>Proceedings of the International Symposium on Marine Biogeographic Evolution<\/i>. <b>2<\/b>. Auckland, New Zealand: <span class=\"nowrap\">707\u2013<\/span>716.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Proceedings+of+the+International+Symposium+on+Marine+Biogeographic+Evolution&amp;rft.atitle=The+reproductive+biology+of+Tripneustes+gratilla+Linnaeus+%28Echinodermata%3A+Echinoidea%29%2C+with+some+notes+on+Diadema+setosum&amp;rft.volume=2&amp;rft.pages=707-716&amp;rft.date=1979&amp;rft.aulast=Tuason&amp;rft.aufirst=A.+Y.&amp;rft.au=Ed+D.+Gomez&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-Lessios1981-11\"><span class=\"mw-cite-backlink\"><b><a href=\"#cite_ref-Lessios1981_11-0\">^<\/a><\/b><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite id=\"rdp-we-CITEREFLessios1981\" class=\"citation journal cs1\">Lessios, H. A. (1981). \"Reproductive periodicity of the echinoids <i>Diadema<\/i> and <i>Echinometra<\/i> on the two coasts of Panama\". <i>Journal of Experimental Marine Biology and Ecology<\/i>. <b>50<\/b> (1): <span class=\"nowrap\">47\u2013<\/span>61. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Bibcode_(identifier)\" class=\"mw-redirect wiki-link\" title=\"Bibcode (identifier)\" target=\"_new\">Bibcode<\/a>:<a rel=\"external_link\" class=\"external text\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/1981JEMBE..50...47L\" target=\"_new\">1981JEMBE..50...47L<\/a>. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Doi_(identifier)\" class=\"mw-redirect wiki-link\" title=\"Doi (identifier)\" target=\"_new\">doi<\/a>:<a rel=\"external_link\" class=\"external text\" href=\"https:\/\/doi.org\/10.1016%2F0022-0981%2881%2990062-9\" target=\"_new\">10.1016\/0022-0981(81)90062-9<\/a>.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Journal+of+Experimental+Marine+Biology+and+Ecology&amp;rft.atitle=Reproductive+periodicity+of+the+echinoids+Diadema+and+Echinometra+on+the+two+coasts+of+Panama&amp;rft.volume=50&amp;rft.issue=1&amp;rft.pages=47-61&amp;rft.date=1981&amp;rft&#95;id=info%3Adoi%2F10.1016%2F0022-0981%2881%2990062-9&amp;rft&#95;id=info%3Abibcode%2F1981JEMBE..50...47L&amp;rft.aulast=Lessios&amp;rft.aufirst=H.+A.&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-Reproduction&#95;of&#95;the&#95;long-spined&#95;sea&#95;urchin&#95;Diadema&#95;setosum&#95;in&#95;the&#95;Gulf&#95;of&#95;Aqaba-12\"><span class=\"mw-cite-backlink\"><b><a href=\"#cite_ref-Reproduction_of_the_long-spined_sea_urchin_Diadema_setosum_in_the_Gulf_of_Aqaba_12-0\">^<\/a><\/b><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite id=\"rdp-we-CITEREFBronsteinKrohLoya2016\" class=\"citation journal cs1\">Bronstein, Omri; Kroh, Andreas; Loya, Yossi (12 July 2016). <a rel=\"external_link\" class=\"external text\" href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC4941735\" target=\"_new\">\"Reproduction of the long-spined sea urchin Diadema setosum in the Gulf of Aqaba\"<\/a>. <i>Scientific Reports<\/i>. <b>6<\/b> (1) 29569. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Doi_(identifier)\" class=\"mw-redirect wiki-link\" title=\"Doi (identifier)\" target=\"_new\">doi<\/a>:<a rel=\"external_link\" class=\"external text\" href=\"https:\/\/doi.org\/10.1038%2Fsrep29569\" target=\"_new\">10.1038\/srep29569<\/a>. <a href=\"https:\/\/en.wikipedia.org\/wiki\/PMC_(identifier)\" class=\"mw-redirect wiki-link\" title=\"PMC (identifier)\" target=\"_new\">PMC<\/a>&#160;<span class=\"id-lock-free\" title=\"Freely accessible\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC4941735\" target=\"_new\">4941735<\/a><\/span>. <a href=\"https:\/\/en.wikipedia.org\/wiki\/PMID_(identifier)\" class=\"mw-redirect wiki-link\" title=\"PMID (identifier)\" target=\"_new\">PMID<\/a>&#160;<a rel=\"external_link\" class=\"external text\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/27403725\" target=\"_new\">27403725<\/a>.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Scientific+Reports&amp;rft.atitle=Reproduction+of+the+long-spined+sea+urchin+Diadema+setosum+in+the+Gulf+of+Aqaba&amp;rft.volume=6&amp;rft.issue=1&amp;rft.artnum=29569&amp;rft.date=2016-07-12&amp;rft&#95;id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC4941735%23id-name%3DPMC&amp;rft&#95;id=info%3Apmid%2F27403725&amp;rft&#95;id=info%3Adoi%2F10.1038%2Fsrep29569&amp;rft.aulast=Bronstein&amp;rft.aufirst=Omri&amp;rft.au=Kroh%2C+Andreas&amp;rft.au=Loya%2C+Yossi&amp;rft&#95;id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC4941735&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-Lessios2001-13\"><span class=\"mw-cite-backlink\"><b><a href=\"#cite_ref-Lessios2001_13-0\">^<\/a><\/b><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite id=\"rdp-we-CITEREFLessiosB.&#95;D.&#95;KessingJohn&#95;S.&#95;Pearse2001\" class=\"citation journal cs1\">Lessios, H. A.; B. D. Kessing; John S. Pearse (2001). <a rel=\"external_link\" class=\"external text\" href=\"http:\/\/www3.interscience.wiley.com\/journal\/118969890\/abstract\" target=\"_new\">\"Population structure and speciation in tropical seas: Global phylogeography of the sea urchin <i>Diadema<\/i>\"<\/a>. <i>Evolution<\/i>. <b>55<\/b> (5): <span class=\"nowrap\">955\u2013<\/span>975. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Doi_(identifier)\" class=\"mw-redirect wiki-link\" title=\"Doi (identifier)\" target=\"_new\">doi<\/a>:<a rel=\"external_link\" class=\"external text\" href=\"https:\/\/doi.org\/10.1554%2F0014-3820%282001%29055%5B0955%3APSASIT%5D2.0.CO%3B2\" target=\"_new\">10.1554\/0014-3820(2001)055[0955:PSASIT]2.0.CO&#59;2<\/a>. <a href=\"https:\/\/en.wikipedia.org\/wiki\/PMID_(identifier)\" class=\"mw-redirect wiki-link\" title=\"PMID (identifier)\" target=\"_new\">PMID<\/a>&#160;<a rel=\"external_link\" class=\"external text\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/11430656\" target=\"_new\">11430656<\/a>.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Evolution&amp;rft.atitle=Population+structure+and+speciation+in+tropical+seas%3A+Global+phylogeography+of+the+sea+urchin+Diadema&amp;rft.volume=55&amp;rft.issue=5&amp;rft.pages=955-975&amp;rft.date=2001&amp;rft&#95;id=info%3Adoi%2F10.1554%2F0014-3820%282001%29055%5B0955%3APSASIT%5D2.0.CO%3B2&amp;rft&#95;id=info%3Apmid%2F11430656&amp;rft.aulast=Lessios&amp;rft.aufirst=H.+A.&amp;rft.au=B.+D.+Kessing&amp;rft.au=John+S.+Pearse&amp;rft&#95;id=http%3A%2F%2Fwww3.interscience.wiley.com%2Fjournal%2F118969890%2Fabstract&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><span class=\"cs1-maint citation-comment\"><code class=\"cs1-code\">{{<a href=\"\/wiki\/Template:Cite_journal\" title=\"Template:Cite journal\">cite journal<\/a>}}<\/code>:  CS1 maint: deprecated archival service (<a href=\"https:\/\/en.wikipedia.org\/wiki\/Category:CS1_maint:_deprecated_archival_service\" title=\"Category:CS1 maint: deprecated archival service\" target=\"_new\" class=\"wiki-link\">link<\/a>)<\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-Williamson1996-14\"><span class=\"mw-cite-backlink\"><b><a href=\"#cite_ref-Williamson1996_14-0\">^<\/a><\/b><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite id=\"rdp-we-CITEREFWilliamsonPJ&#95;FennerJW&#95;BurnettJF&#95;Rifkin1996\" class=\"citation book cs1\">Williamson, JA; PJ Fenner; JW Burnett; JF Rifkin (1996). <i>Venomous and poisonous marine animals: a medical and biological handbook<\/i>. Sydney, Australia: University of New South Wales Press. p.&#160;504. <a href=\"https:\/\/en.wikipedia.org\/wiki\/ISBN_(identifier)\" class=\"mw-redirect wiki-link\" title=\"ISBN (identifier)\" target=\"_new\">ISBN<\/a>&#160;<bdi>0-86840-279-6<\/bdi>.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Venomous+and+poisonous+marine+animals%3A+a+medical+and+biological+handbook&amp;rft.place=Sydney%2C+Australia&amp;rft.pages=504&amp;rft.pub=University+of+New+South+Wales+Press&amp;rft.date=1996&amp;rft.isbn=0-86840-279-6&amp;rft.aulast=Williamson&amp;rft.aufirst=JA&amp;rft.au=PJ+Fenner&amp;rft.au=JW+Burnett&amp;rft.au=JF+Rifkin&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<li id=\"rdp-we-cite&#95;note-15\"><span class=\"mw-cite-backlink\"><b><a href=\"#cite_ref-15\">^<\/a><\/b><\/span> <span class=\"reference-text\"><link rel=\"mw-deduplicated-inline-style\" href=\"mw-data:TemplateStyles:r1333433106\" \/><cite id=\"rdp-we-CITEREFGrignardJangoux1994\" class=\"citation journal cs1\">Grignard, J.C.; Jangoux, M. (June 1994). \"Occurrence and effects of symbiotic pedunculate barnacles on echinoid hosts\". <i>Echinoderms Through Time<\/i>: 679.<\/cite><span title=\"ctx&#95;ver=Z39.88-2004&amp;rft&#95;val&#95;fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Echinoderms+Through+Time&amp;rft.atitle=Occurrence+and+effects+of+symbiotic+pedunculate+barnacles+on+echinoid+hosts&amp;rft.pages=679&amp;rft.date=1994-06&amp;rft.aulast=Grignard&amp;rft.aufirst=J.C.&amp;rft.au=Jangoux%2C+M.&amp;rfr&#95;id=info%3Asid%2Fen.wikipedia.org%3ADiadema+setosum\" class=\"Z3988\"><\/span><\/span>\n<\/li>\n<\/ol><\/div>\n<div class=\"mw-heading mw-heading2\"><h2 id=\"rdp-we-External_links\">External links<\/h2><\/div>\n<ul><li>Photos of <a rel=\"external_link\" class=\"external text\" href=\"https:\/\/sealifecollection.org\/taxon\/213372\" target=\"_new\">Diadema setosum<\/a> in the Sealife Collection<\/li><\/ul>\n<div class=\"navbox-styles\"><\/div><div role=\"navigation\" class=\"navbox\" aria-labelledby=\"Taxon&#95;identifiers2715\" style=\"padding:3px\"><table class=\"nowraplinks hlist navbox-inner\" style=\"border-spacing:0;background:transparent;color:inherit\"><tbody><tr><th scope=\"col\" class=\"navbox-title\" colspan=\"2\"><div id=\"rdp-we-Taxon&#95;identifiers2715\" style=\"font-size:114%;margin:0 4em\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Help:Taxon_identifiers\" title=\"Help:Taxon identifiers\" target=\"_new\" class=\"wiki-link\">Taxon identifiers<\/a><\/div><\/th><\/tr><tr><th scope=\"row\" class=\"navbox-group\" style=\"width:1%;text-align: left;\"><i>Diadema setosum<\/i><\/th><td class=\"navbox-list-with-group navbox-list navbox-odd\" style=\"width:100%;padding:0\"><div style=\"padding:0 0.25em\">\n<ul><li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wikidata\" title=\"Wikidata\" target=\"_new\" class=\"wiki-link\">Wikidata<\/a>: <span class=\"uid\"><span class=\"external\"><a href=\"https:\/\/www.wikidata.org\/wiki\/Q2270025\" class=\"extiw wiki-link\" title=\"wikidata:Q2270025\" target=\"_new\">Q2270025<\/a><\/span><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wikispecies\" title=\"Wikispecies\" target=\"_new\" class=\"wiki-link\">Wikispecies<\/a>: <span class=\"uid\"><span class=\"external\"><a href=\"https:\/\/species.wikimedia.org\/wiki\/Diadema_setosum\" class=\"extiw wiki-link\" title=\"wikispecies:Diadema setosum\" target=\"_new\">Diadema setosum<\/a><\/span><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Animal_Diversity_Web\" title=\"Animal Diversity Web\" target=\"_new\" class=\"wiki-link\">ADW<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/animaldiversity.org\/accounts\/Diadema_setosum\/\" target=\"_new\">Diadema_setosum<\/a><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Australian_Faunal_Directory\" title=\"Australian Faunal Directory\" target=\"_new\" class=\"wiki-link\">AFD<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/biodiversity.org.au\/afd\/taxa\/Diadema_setosum\" target=\"_new\">Diadema_setosum<\/a><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Barcode_of_Life_Data_System\" title=\"Barcode of Life Data System\" target=\"_new\" class=\"wiki-link\">BOLD<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/bench.boldsystems.org\/index.php\/TaxBrowser_TaxonPage?taxid=171240\" target=\"_new\">171240<\/a><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Catalogue_of_Life\" title=\"Catalogue of Life\" target=\"_new\" class=\"wiki-link\">CoL<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/www.catalogueoflife.org\/data\/taxon\/35864\" target=\"_new\">35864<\/a><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Encyclopedia_of_Life\" title=\"Encyclopedia of Life\" target=\"_new\" class=\"wiki-link\">EoL<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/eol.org\/pages\/2942801\" target=\"_new\">2942801<\/a><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Global_Biodiversity_Information_Facility\" title=\"Global Biodiversity Information Facility\" target=\"_new\" class=\"wiki-link\">GBIF<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/www.gbif.org\/species\/5721108\" target=\"_new\">5721108<\/a><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/INaturalist\" title=\"INaturalist\" target=\"_new\" class=\"wiki-link\">iNaturalist<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/inaturalist.org\/taxa\/199812\" target=\"_new\">199812<\/a><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Interim_Register_of_Marine_and_Nonmarine_Genera\" title=\"Interim Register of Marine and Nonmarine Genera\" target=\"_new\" class=\"wiki-link\">IRMNG<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/www.irmng.org\/aphia.php?p=taxdetails&id=10688513\" target=\"_new\">10688513<\/a><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/National_Center_for_Biotechnology_Information\" title=\"National Center for Biotechnology Information\" target=\"_new\" class=\"wiki-link\">NCBI<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/www.ncbi.nlm.nih.gov\/Taxonomy\/Browser\/wwwtax.cgi?mode=Info&id=31175\" target=\"_new\">31175<\/a><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Ocean_Biodiversity_Information_System\" title=\"Ocean Biodiversity Information System\" target=\"_new\" class=\"wiki-link\">OBIS<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/obis.org\/taxon\/213372\" target=\"_new\">213372<\/a><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Open_Tree_of_Life\" title=\"Open Tree of Life\" target=\"_new\" class=\"wiki-link\">Open Tree of Life<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/tree.opentreeoflife.org\/taxonomy\/browse?id=631175\" target=\"_new\">631175<\/a><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/SeaLifeBase\" title=\"SeaLifeBase\" target=\"_new\" class=\"wiki-link\">SeaLifeBase<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/www.sealifebase.ca\/Summary\/SpeciesSummary.php?id=86751\" target=\"_new\">86751<\/a><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/zh.wikipedia.org\/wiki\/%E8%87%BA%E7%81%A3%E7%89%A9%E7%A8%AE%E5%90%8D%E9%8C%84\" class=\"extiw wiki-link\" title=\"zh:\u81fa\u7063\u7269\u7a2e\u540d\u9304\" target=\"_new\">TaiCOL<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/taicol.tw\/taxon\/t0030960\" target=\"_new\">t0030960<\/a><\/span><\/span><\/li>\n<li><span style=\"white-space:nowrap;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/World_Register_of_Marine_Species\" title=\"World Register of Marine Species\" target=\"_new\" class=\"wiki-link\">WoRMS<\/a>: <span class=\"uid\"><a rel=\"external_link\" class=\"external text\" href=\"https:\/\/www.marinespecies.org\/aphia.php?p=taxdetails&id=213372\" target=\"_new\">213372<\/a><\/span><\/span><\/li><\/ul>\n<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n<!-- \nNewPP limit report\nParsed by mw\u2010web.codfw.canary\u2010849c79bccb\u20104sqc2\nCached time: 20260602080454\nCache expiry: 2592000\nCache expiry source: Module:Citation\/CS1 (os.date(%Y))\nReduced expiry: false\nComplications: [vary\u2010revision\u2010sha1, prevent\u2010selective\u2010update, show\u2010toc]\nCPU time usage: 0.616 seconds\nReal time usage: 0.805 seconds\nPreprocessor visited node count: 6391\/1000000\nRevision size: 15607\/2097152 bytes\nPost\u2010expand include size: 79161\/2097152 bytes\nTemplate argument size: 10006\/2097152 bytes\nHighest expansion depth: 20\/100\nExpensive parser function count: 18\/500\nUnstrip recursion depth: 1\/20\nUnstrip post\u2010expand size: 77668\/5000000 bytes\nLua time usage: 0.421\/10.000 seconds\nLua memory usage: 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id=\"rdp-we-p-dock-bottom\">\n\t<ul>\n\t\t\n\t<\/ul>\n<\/div>\n\n\n<\/div><!-- #rdp-we-main -->\n","protected":false},"excerpt":{"rendered":"<h4 style=\"text-align: center;\">Genus<\/h4>\n<p style=\"text-align: center;\">Diadema<\/p>\n<h4 style=\"text-align: center;\">Species<\/h4>\n<p style=\"text-align: center;\">setosum<\/p>\n","protected":false},"featured_media":1597,"template":"","meta":[],"product_brand":[],"product_cat":[34],"product_tag":[],"class_list":{"0":"post-361","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-echinoderms","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Diadem urchin - Moalboal Reef Species<\/title>\n<meta name=\"description\" content=\"A comprehensive online checklist of reef flora and fauna known to be present in the Moalboal reef ecosystem.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/reefspecies.com\/moalboal\/species\/diadem-urchin\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Diadem urchin - Moalboal Reef Species\" \/>\n<meta property=\"og:description\" content=\"A comprehensive online checklist of reef flora and fauna known to be present in the Moalboal reef ecosystem.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/reefspecies.com\/moalboal\/species\/diadem-urchin\/\" \/>\n<meta property=\"og:site_name\" content=\"Moalboal Reef Species\" \/>\n<meta property=\"article:modified_time\" content=\"2020-07-06T08:22:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/reefspecies.com\/moalboal\/wp-content\/uploads\/2019\/11\/diadem-sea-urchin-diadema-setosum1.jpeg\" 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