Leviathan

An animal usually associated with water, apparently some form of aquatic creature. At Job 3:8 and 41:1, it seems to refer to the crocodile or some other aquatic creature of great proportions and strength. At Psalm 104:26, it may be some type of whale. Elsewhere it is used figuratively and is not identifiable with any one animal.​—Ps 74:14; Isa 27:1.