(n.) Any one of many species of venomous aquatic snakes of the family Hydrophidae, having a flattened tail and living entirely in the sea, especially in the warmer parts of the Indian and Pacific Oceans. They feed upon fishes, and are mostly of moderate size, but some species become eight or ten feet long and four inches broad.

Bassalia Loch Ness monster abyss abyssal zone alevin bathyal zone benthon bottom waters bottomless depths cetacean dolphin fingerling fish fry game fish grilse ground inner space kipper man-eater man-eating shark marine animal minnow minny nekton ocean bottom ocean depths ocean floor panfish pelagic zone plankton porpoise salmon sea monster sea pig sea serpent sea snake shark smolt sponge the deep the deep sea the deeps the depths trench tropical fish whale