abstract:Diadema antillarum, also known as the lime urchin, black sea urchin or the long-spined sea urchin,Long-spined Sea Urchin is a species of sea urchin in the Family Diadematidae.
The Caribbeancoral reefsin question were dealt a blow in the mid 1980swhenamysteriousdiseasealmost completely wiped out the spinyurchin (Diademaantillarum).