sea slug, nudibranch
["plunger, plumber's helper", 'sidewinder, horned rattlesnake, Crotalus cerastes', 'stingray', 'hook, claw', 'horned viper, cerastes, sand viper, horned asp, Cerastes cornutus', 'tree frog, tree-frog', 'lycaenid, lycaenid butterfly']