ABYSS, THE (1989)

In this underwater sci-fi adventure written and directed by James Cameron, a nuclear sub mysteriously sinks and a private oil rig crew, led by foreman Bud Brigman (Ed Harris), is recruited to join a team of Navy SEALs on a search and rescue effort. The group soon finds themselves on a spectacular life-and-death odyssey 25,000 feet below the ocean's surface, where they find a mysterious force that could either change the world—or destroy it. The Abyss also stars Mary Elizabeth Mastrantonio and Michael Biehn