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
Eugène Lourié, Douglas Hickox
Derren Nesbitt
The Radar Operator, at the radar room (uncredited)
Patrick Jordan
Photo Lab Aide
Gene Evans
Steve Karnes
André Morell
Prof. James Bickford
Jack MacGowran
Dr. Sampson, the paleontologist
André Maranne
French Radio Officer (uncredited)
Howard Lang
Naval Commader, at the "Valkyrie" wreck (uncredited)