
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.

as Tony Petrakis

as Gwyneth Rhys

as Mike Petrakis

as Socrates Houlis

as Thomas Rhys

as Mama Petrakis

as Arnold Dix

as Sinan

as Demetrios Sofotes

as Penny Petrakis

as Griff Rhys

as Narrator (uncredited)

as Doctor (uncredited)

as Crewman of 'Snapper' (uncredited)