hippopotamus, hippo, river horse, Hippopotamus amphibius
['sea cucumber, holothurian', 'king snake, kingsnake', 'muzzle', 'flatworm, platyhelminth', 'great white shark, white shark, man-eater, man-eating shark, Carcharodon carcharias', 'sea lion', 'crayfish, crawfish, crawdad, crawdaddy']