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.
Tricia O'Neil
as Anne Kimbrough
Steve Marachuk
as Tyler Sherman
Lance Henriksen
as Police Chief Steve Kimbrough
Ricky Paull Goldin
as Chris Kimbrough
Ted Richert
as Raoul, Hotel Manager
Leslie Graves
as Allison Dumont
Carole Davis
as Jai
Connie Lynn Hadden
as Loretta
Arnie Ross
as Mal the Cook
Tracey Berg
as Beverly
Albert Sanders
as Leo Bell
Anne Pollack
as Mrs. Wilson