A scuba diving instructor, her biochemist boyfriend, and her police chief ex-husband try to link a series of bizarre deaths to a mutant strain of piranha fish whose lair is a sunken freighter ship off a Caribbean island resort. Directors James CameronOvidio G. AssonitisMiller Drake Writers Charles H. EgleeJames CameronOvidio G. Assonitis Stars Tricia O'Neil Steve Marachuk Lance Henriksen