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Naked test of Arbacia lixula from Agay (French Mediterranean). One ambulacra seems to have experienced a developmental issue. Licence : CC by-sa 4.0 (https://commons.wikimedia.org/wiki/File:Arbacia_lixula_02.JPG?uselang=fr)
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Arbacia lixula
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Arbacia lixula
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Rab (Croatia)
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A purple-spined sea urchin (Arbacia punctulata) at the Flower Garden Banks National Marine Sanctuary, l ocated 70 to 115 miles off the coast of Texas and Louisiana (NOAA picture (http://flowergarden.noaa.gov/about/echinodermlist.html)).
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Arbacia dufresnii / left: oral view, upper right: apical view, lower right: lateral view.
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Arbacia crassispina, aboral view. Tristan de Cunha main Island (tide pools), Central South Atlantic.
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Arbacia dufresnii (aboral view), Icefish Station 12, Falkland Islands, depth 70 -79 m, southwest Atlantic.
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aboral view of an arbaciid sea urchin New Caledonia, NHM Vienna specimen no. 2005z0277/0017
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Arbacia spatuligera (aboral view), collected from Salaverry, Peru, South Pacific Ocean.
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Arbacia spatuligera observed at Cocholgüe (Tomé, Biobío, Chili).
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Arbacia stellata (aboral view), Gulfo de San Miguel, Darien, Panama, eastern Pacific. Source : Echinoderms of Panama (http://echinoderms.lifedesks.org/file-colorboxed/361).
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Arbacia punctulata (aboral view), collected off Georgia, U.S.A., North Atlantic Ocean (031 23 24N, 080 53 06W), from a depth of 17 m. Source : Echinoderms of Panama (http://echinoderms.lifedesks.org/taxonomy/term/15811/media).
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Coelopleurus floridanus, collected from 33 48.06 N, 76 34.42 W, U.S.A, North Atlantic Ocean, from a depth of 77 m by the R. V. Eastward. Source : Echinoderms of Panama (http://echinoderms.lifedesks.org/file-colorboxed/621).
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Coelopleurus floridanus , aboral view of denuded test, collected from 33 48.06 N, 76 34.42 W, U.S.A, North Atlantic Ocean, from a depth of 77 m by the R. V. Eastward. Source : Echinoderms of Panama (http://echinoderms.lifedesks.org/file-colorboxed/406).
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Coelopleurus undulatus, holotype ZMC ECH 337 (http://echinoderms.lifedesks.org/file-colorboxed/239) (aboral view), Sagami Bay, Japan.
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aboral view of an arbaciid sea urchin Playa Blance, S Iquique, Chile, NHM Vienna specimen no. 2009z155/0005