O Monstro do Mar

Paul Hubschmid

Prof. Nesbitt

Paula Raymond

Lee Hunter

Cecil Kellaway

Prof. Elson

Kenneth Tobey

Col. Evans

Donald Woods

Capt. Jackson

Lee Van Cleef

Corp. Stone

Steve Brodie

Sgt. Loomis

Ross Elliott

George Ritchie

Jack Pennick

Jacob Bowman

Ray Hyke

Sgt. Willistead

Paula Hill

Miss Ryan

Michael Fox

ER Doctor

Alvin Greenman

Radar Man #1

Frank Ferguson

Dr. Morton

King Donovan

Dr. Ingersoll