devilfish

(noun) medium-sized greyish-black whale of the northern Pacific. Synonyms: grey whale, gray whale, Eschrichtius gibbosus, Eschrichtius robustus.

(noun) bottom-living cephalopod having a soft oval body with eight long tentacles. Synonyms: octopus.

(noun) extremely large pelagic tropical ray that feeds on plankton and small fishes; usually harmless but its size make it dangerous if harpooned. Synonyms: manta, manta ray.