Robert Wagner,Terri Moore,Gilbert Roland,J. Carrol Naish,Richard Boone,Angela Clarke,Peter Graves,Jay Novell.
"The intense rivalry between Greek and American sponge fishermen for gleanings off the coast of Florida comes to a head when Arnold and his friends, the Rhys brothers pinch a load of sponges from the father and son team of Mike (Gilbert Roland) and Tony (Robert Wagner) Petrakis. Determined to recoup the loss, Tony decides to risk diving off the dangerous 12-mile reef and is killed when he falls off the reef. Mike, who is madly in love with Gwyneth (Terry Moore) , an American beauty, is now torn between his devotion for Gwyneth and his intense, inborn anti-American sentiments."