placenta biscuit starfish - (sphaerodiscus placenta)

adriatic aegean animal aquarium aquatic arms asexual asteroidea beautiful biscuit class clonal closeup collection colorful coral crustacean cushion diversity diving echinoderm ecosystem environment equal exhibit famous fish food goniasteridae gonochoric invertebrate life macro marine mediterranean members natural nature nautical ocean orange organism pentagonaster placenta reef regeneration reproduction salt scene scuba sea seafood sealife seascape seashell seastar seaweed serenity sexual shallow shape shore sphaeriodiscus sphaerodiscus star starfish stars tropical undersea underside underwater vibrant water wildlife