Piranha

Bradford Dillman

Paul Grogan

Heather Menzies

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