closeup of a crab on a starfish in the underwater natural environment

adaptation submerged seafloor organism undersea symbiotic survival biodiversity saltwater arthropod crustacean starfish inhabit decapoda claw tidepool mollusk sealife ecosystem invertebrate seashell environment environmental landscape seaside photography scenic biology predator habitat aquatic coast wildlife animal nature colorful beautiful beach shore crab seashore conservation coastal ocean sunlight camouflage tropical sea sand ai generated