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Basketball, Verde Island Passage, southern Luzon, Philippines Photo: R. Mooi, 2016, 3 m depth
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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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Diadema palmeri at Poor Knights Island Marine Reserve, New Zealand.
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Diadema mexicanum (along with a sea star Phataria unifascialis) seen in Galapagos.
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Diadema mexicanum, aboral view showing pattern of iridophores, Tabogia, Panama, eastern Pacific. Source : Echinoderms of Panama (http://echinoderms.lifedesks.org/file-colorboxed/286).
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Diadema africanum observed in Madeira (off Morocco). Picture courtesy of Lesley Clements (https://www.inaturalist.org/people/lovelyclemmy).