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

black long spine urchin coral reef diadema setosum animal aquatic marine life nature ocean underwater water wildlife colorful diving natural scuba beautiful blue color fish sea tropical animals background danger delicious eatable echinodermata environment fauna habitat invertebrate invertebrates spined longspined longspine organisms porcupine seafood snorkeling species long-spined belonging family diadematidae reef diadematidae