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In seagrass at Protacio, Lubang Island, western Verde Island Passage, Philippines Photo: R.Mooi, 2014, 1 m depth Comparison of two common Diadema species living together in same habitat: Diadema savignyi on the left, Diadema setosum on the right
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Diadema setosum, detail showing bright blue rows of dots and one of five bright white iridescent spots. Note tube feet and conspicuous anal sac with red ring around anal opening. Siit, Negros Oriental, Visayas, Philippines Photo: R. Mooi, 2016, 2 m depth
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Nafplio, Peloponnese (Greece)
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Nafplio, Peloponnese (Greece)
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Nafplio, Peloponnese (Greece)
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Nafplio, Peloponnese (Greece)
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03.01.2019 25°39'41.69"N 34°35'13.15"E Marsa Trombi, night dive
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Diadema setosum (Leske, 1778) 2012-05-05. by Dr. WJ Chen from SiaoLioucious, Pingtung County, Taiwan, ROC
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Diadema setosum on Mombasa beach (Feb 2014)
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Group of Diadema savignyi with iridescent lines showing on each specimen. Cemetery Beach, Verde Island Passage, southern Luzon, Philippines Photo: R. Mooi, 2016, about 1 m depth
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Diadema savignyi Cemetery Beach, Verde Island Passage, southern Luzon, Philippines Photo: R. Mooi, 2014, 1 m depth, using flash Detail shows iridescence on spine bases as well as in lines on the test
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The "dark morph" of Echinothrix calamaris, seen in Mayotte (Indian ocean) at night.
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Echinothrix calamaris (Pallas, 1774) 2012-05-05. by Dr. WJ Chen from SiaoLioucious, Pingtung County, Taiwan, ROC
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A live Echinothrix diadema photographed at night in Mayotte (Dzaoudzi).
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Echinothrix diadema (Linnaeus, 1758) 2011-10-15. by Dr. WJ Chen from SiaoLioucious, Pingtung County, Taiwan, ROC Editor comment: Photo is of a juvenile/small adult, which has banded ambulacral and interambulacral spines, without a large periproctal cone (pers. comm. Simon Coppard, 21/06/2013)
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Echinometra lucunter, aboral view. Galeta Point, Caribbean Coast, Panama. Source : Echinoderms of Panama (http://echinoderms.lifedesks.org/file-colorboxed/459).
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An Echinometra mathaei from Mayotte, Indian ocean.
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Image provided by ReefLifeApps (http://reeflifeapps.com)Please inform the author before republishing.
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photographed 16/04/2012 at 1 m depth at Mangrove Bay, south of Al Qusair, Egypt
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Echinostrephus molaris from Mayotte (Indian ocean).
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Heterocentrotus trigonarius from Réunion island (Indian ocean). Picture (https://commons.wikimedia.org/wiki/File:Heterocentrotus_trigonarius_R%C3%A9union.JPG) by Philippe Bourjon.
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Detail of Heterocentrotus trigonarius from Réunion island : this species can be distinguished from its sister taxa from the spatulate (rather than tesselate) secondary spines. Picture (https://commons.wikimedia.org/wiki/File:Heterocentrotus_trigonarius,_d%C3%A9tail.JPG) by Philippe Bourjon.
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Live Brissus latecarinatus from Réunion island (Indian ocean). Picture (https://commons.wikimedia.org/wiki/File:Brissus_latecarinatus.jpg?uselang=fr) by Philippe Bourjon.
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Aboral view of Spatagobrissus mirabilis, off Cape Town (South Africa). Picture (https://www.inaturalist.org/observations/11859301) courtesy of Georgina Jones.