

Underwater deep-sea miners encounter a Soviet wreck and bring back a dangerous cargo to their base on the ocean floor with horrifying results. The crew of the mining base must fight to survive against a genetic mutation that hunts them down one by one.
Practical Effects
Grotesque creature effects by Stan Winston's team, gloriously slimy
Production
Underwater sets that actually feel pressurized and claustrophobic
Costume
Bulky diving suits that make everyone look like panicked marshmallows

Director
George P. Cosmatos
Trivia, insights & behind the scenes
Stan Winston designed the creature while simultaneously working on Pumpkinhead and Aliens—explains why it looks like a greatest hits album of his other monsters.
Released months after DeepStar Six and The Abyss, making 1989 the year Hollywood collectively decided underwater horror was the next big thing. It wasn't.