Leviathan is a 1989 science-fiction horror film about a hideous creature that stalks and kills a group of people in a sealed environment, in a similar vein to such films as Alien (1979) and The Thing (1982). It is one of many underwater-themed movies released around 1989, including The Abyss, DeepStar Six, The Evil Below, Lords of the Deep, and The Rift (Endless Descent).