A giant octopus, whose feeding habits have been affected by radiation from H-Bomb tests, rises from the Mindanao Deep to terrorize the California Coast.

Directed by: Robert Gordon
Written by: Harold Jacob Smith & George Worthing Yates
Runtime: 79 minutes
Critics score:
Tagline: IT CRUSHES! KILLS! DESTROYS!
Cast:
Kenneth Tobey Kenneth Tobey
Cmdr. Pete Mathews 
Faith Domergue Faith Domergue
Prof. Lesley Joyce 
Donald Curtis Donald Curtis
Dr. John Carver 
Chuck Griffiths Chuck Griffiths
Lt. Griff, USN 
Ian Keith Ian Keith
Adm. Burns 
Dean Maddox Jr. Dean Maddox Jr.
Adm. Norman 
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Also known as:
  • Il mostro dei mari
  • Le monstre surgit des mers
  • Panique à San Francisco
  • Το Υποβρύχιον Τέρας