long-spined sea urchin
Nomes alternativos: Diadema antillarum, lime urchin, black sea urchin
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The long-spined sea urchin is a species that lives on coral reefs in the western Atlantic and Caribbean basin. These animals are herbivore, and a healthy population of sea urchins can help prevent the overgrowth of algae on reefs. Sea urchins live in shallow waters of 1 to 10 meters. They are often found in crevices.