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
Guy Standeven
Naval Officer in Situation Room (uncredited)
Derren Nesbitt
The Radar Operator, at the radar room (uncredited)
John Turner
John
Gene Evans
Steve Karnes
Maurice Kaufmann
Mini Submarine Officer
Neil Hallett
Dr. Sampson's Helicopter Pilot (uncredited)
Howard Lang
Naval Commader, at the "Valkyrie" wreck (uncredited)