| Sea Urchins (Echinoidea) |
All sea urchins are benthic, and the majority of species feed on algae. There are ca. 950 species grouped in ten orders.
| Diadematoida | ||
| Diadematidae (Long-spined Urchins) | ||
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Long-spined Urchin (Diadema antillarum) |
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| Camarodonta | ||
| Echinometridae (Sea Urchins) | ||
| Reef Urchin (Echinometra viridis) | ||
| Toxopneustidae (Globular Urchins) | ||
| Variegated Sea Urchin (Lytechinus variegatus) | ||
| West Indian Sea Egg (Tripneustes ventricosus) | ||
| Spatangoida | ||
| Brissidae (Heart Urchins) | ||
| Red Heart Urchin (Meoma ventricosa) | ||
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