The Giant Behemoth(1959)

Lloyd Lamble

Senior Admiral, at the Admiralty

Jack MacGowran

Dr. Sampson, the paleontologist

Maurice Kaufmann

Mini Submarine Officer

Henri Vidon

Tom Trevethan

Patrick Jordan

Photo Lab Aide

Leonard Sachs

Dialogue Scientist at Conference (bit)

Max Faulkner

PLA Radio Operator (uncredited)

Neil Hallett

Dr. Sampson's Helicopter Pilot (uncredited)

André Maranne

French Radio Officer (uncredited)

Derren Nesbitt

The Radar Operator, at the radar room (uncredited)

Guy Standeven

Naval Officer in Situation Room (uncredited)

Howard Lang

Naval Commader, at the "Valkyrie" wreck (uncredited)

Ernest Blyth

Scientist at Conference (uncredited)

Neal Arden

TV Newscaster (uncredited)

Paul Beradi

Man Listening to Car Radio (uncredited)