beast vs marine creature

Other hyponyms of beast include pest, critter, creepy-crawly, darter, peeper, homeotherm, homoiotherm, homotherm, ectotherm, poikilotherm, range animal, varment, varmint, scavenger, work animal, domestic animal, domesticated animal, feeder, migrator, molter, moulter, pet, stayer, stunt, marine animal, sea animal, sea creature, female, male, adult, offspring, young, pureblood, purebred, thoroughbred, giant, survivor, mutant, herbivore, insectivore, acrodont, pleurodont, zooplankton, conceptus, embryo, fertilized egg, chordate, invertebrate, metazoan, omnivore, predator, predatory animal, prey, quarry, game, hexapod, biped, larva, racer, fictional animal, captive, mate, albino, spirit animal.