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.
as Anne Kimbrough
as Tyler Sherman
as Police Chief Steve Kimbrough
as Chris Kimbrough
as Raoul, Hotel Manager
as Allison Dumont
as Jai
as Loretta
as Mal the Cook
as Beverly
as Leo Bell
as Mrs. Wilson
as Myrna Benotti
as Ralph Benotti
as Ron 'Ronny', the Lifeguard
as Cindy
as Mr. Dumont
as Gabby
as Frank
as Nurse April
as Aaron
as Waiter
as Randy
as Randy's Wife
as Randy's Son
as Robert Haywood
as Lou
as Lisa
as Jai (voice) (uncredited)
as Opening Victim (voice) (uncredited)