Sci-Fi Horror
Marine atomic tests cause changes in the ocean's ecosystem resulting in dangerous blobs of radiation and the resurrection of a dormant dinosaur which threatens London.
Directed by
Douglas Hickox, Eugène Lourié
André Morell
Prof. James Bickford
Derren Nesbitt
The Radar Operator, at the radar room (uncredited)
Gene Evans
Steve Karnes
Guy Standeven
Naval Officer in Situation Room (uncredited)
Patrick Jordan
Photo Lab Aide
Max Faulkner
PLA Radio Operator (uncredited)
Leonard Sachs
Dialogue Scientist at Conference (bit)
Leigh Madison
Jean Trevethan
John Turner
John
André Maranne
French Radio Officer (uncredited)
Neil Hallett
Dr. Sampson's Helicopter Pilot (uncredited)
Jack MacGowran
Dr. Sampson, the paleontologist
Lloyd Lamble
Senior Admiral, at the Admiralty
Alastair Hunter
Dr. C. A. Morris, the village doctor
Maurice Kaufmann
Mini Submarine Officer
Henri Vidon
Tom Trevethan
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)

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