When flesh-eating piranhas are accidentally released into a summer resort's rivers, the guests become their next meal.
as Paul Grogan
as Maggie McKeown
as Dr. Robert Hoak
as Jack
as Buck Gardner
as Dr. Mengers
as Betsy
as Laura Dickinson
as Colonel Waxman
as Trooper
as Mr. Dumont
as Suzie Grogan
as Whitney
as Earl Lyon
as Barbara Randolph
as David
as Jailer
as TV Pitchman
as Boy in Canoe
as Father in Canoe
as Soldier
as Girl
as Water-skier
as Man in Boat
as Screaming Woman
as Dam Guard
as Brandy
as Swimming Deb (uncredited)
as Dr. Robert Hoak (swimming double) (uncredited)
as Scuba Diver #2 (uncredited)
as Hertz Clerk (uncredited)
as Scuba Diver #1 (uncredited)
as Army Sentry (uncredited)
as Scuba Diver (uncredited)
