close-up of a giant clam on a tropical coral reef, ridacna gigas. clam killer for pearl-mining people

marine shell sea ocean water tridacnidae reef underwater blue animal tropical nature giant saltwater mottled mollusc turquoise mantle life fauna environment common wildlife diving dangerous scuba clam bivalve tridacna creature coral elite scene bivalves thailand bivalvia tridacnida mollusk divers maxima egypt st texture