- Bradford Dillman
- Paul Grogan
- Heather Menzies-Urich
- Maggie McKeown
- Kevin McCarthy
- Dr. Robert Hoak
- Keenan Wynn
- Jack
- Dick Miller
- Buck Gardner
- Barbara Steele
- Dr. Mengers
- Belinda Balaski
- Betsy
- Melody Thomas Scott
- Laura Dickinson
- Bruce Gordon
- Colonel Waxman
- Barry Brown
- Trooper
- Paul Bartel
- Mr. Dumont
- Shannon Collins
- Suzie Grogan
- Shawn Nelson
- Whitney
- Richard Deacon
- Earl Lyon
- Janie Squire
- Barbara Randolph
- Roger Richman
- David
- Bill Smillie
- Jailer
- Guich Koock
- TV Pitchman
- Jack Pauleson
- Boy in Canoe
- Eric Henshaw
- Father in Canoe
- Robert Vinson
- Soldier
- Virginia Dunnam
- Girl
- Diamond Farnsworth
- Water-skier
- Bruce Paul Barbour
- Man in Boat
- Robyn Ray
- Screaming Woman
- Mike Sullivan
- Dam Guard
- Jack Cardwell
- Brandy
- Sally Bondi
- Swimming Deb
- Eric Braeden
- Dr. Robert Hoak (swimming double)
- Joe Dante
- Scuba Diver #2
- Amy Holden Jones
- Hertz Clerk
- R.C. Keene
- Beach goer
- Andrew G. La Marca
- Scuba Diver #1
- John Sayles
- Army Sentry
- Phil Tippett
- Scuba Diver #3 (victim)