Leviathan (1989) is a 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).

Underwater deep-sea miners encounter a Soviet wreck and bring back a dangerous cargo to their base on the ocean floor with horrifying results. In a story owing a lot to _Alien_ and _The Thing_, the crew of the mining base must fight to survive against a genetic mutation that hunts them down one by one. Part of a wave of underwater movies including _The Abyss_ and _Deep Star Six_. Written by Keith Loh