Long Spined Sea Urchin (Diadema antillarum), set amidst various colourful sponges and sea fans, Anse Chastenet, St Lucia, Caribbean.

nobody sealife sea life underwater anse chastenet st lucia caribbean long spined sea urchin long spined sea urchins sea urchin sea urchins diadema antillarum sponge sponges sea fans sea fan sea fans exotic tropical spines reef portrait vertical