
Mike and Tony Petrakis are a Greek father and son team who dive for sponges off the coast of Florida. After they are robbed by crooks, Arnold and the Rhys brothers, Mike decides to take his men to the dangerous 12-mile reef to dive for more sponges. Mike suffers a fatal accident when he falls from the reef leaving Tony to carry on the business. But now he has a companion, Gwyneth Rhys.
Genres:

Robert Wagner as Tony Petrakis

Terry Moore as Gwyneth Rhys

Gilbert Roland as Mike Petrakis

J. Carrol Naish as Socrates Houlis

Richard Boone as Thomas Rhys

Angela Clarke as Mama Petrakis

Peter Graves as Arnold Dix

Jay Novello as Sinan

Jacques Aubuchon as Demetrios Sofotes

Gloria Gordon as Penny Petrakis

Harry Carey, Jr. as Griff Rhys

Rock Hudson as Narrator (uncredited)

Jack English as Doctor (uncredited)

William Johnstone as Crewman of 'Snapper' (uncredited)
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