the black long-spine urchin of the coral reef. diadema setosum is a species of long-spined sea urchin belonging to the family

underwater nature animal tropical urchin reef black ocean wildlife marine life sea water coral aquatic fish scuba wild echinoderm background undersea rock environment blue beautiful dive natural color colorful sharp snorkeling saltwater diadema needle fauna ecosystem exotic aquarium travel seascape invertebrate red poisonous spiny spine generative ai