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Diadema antillarum
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Diadema antillarum

echinoderm

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  • Slate-pencil urchin (Heterocentrotus mammillatus)
    In sea urchin

    …setosum of the Indo-Pacific, and D. antillarum of Florida and the West Indies, have toxic spines up to 30 centimetres (12 inches) long. The slate-pencil urchin (Heterocentrotus mammillatus) of the Indo-Pacific has 12-cm spines that may be 1 cm thick—stout enough to be used for writing. Lytechinus variegatus, a pale-greenish…

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