any of various marine gastropods of the suborder Nudibranchia having a shell-less and often beautifully colored body

huge creature of the sea resembling a snake or dragon

any of several marine reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbs

small often brightly colored scaleless marine bottom-dwellers; found in tropical and warm temperate waters of Europe and America

small often brightly colored scaleless marine bottom-dwellers; found in tropical and warm temperate waters of Europe and America

small often brightly colored scaleless marine bottom-dwellers; found in tropical and warm temperate waters of Europe and America