The Shark Hunter (1979)

Mike is a shark hunter, but he's a mysterious man whose past nobody knows anything about, not even his woman, Juanita. Then comes Acapulco, an expert diver, who immediately befriends him. But the situation worsens when Donovan shows up, accompanied by Rosy, who in the past worked with Captain Gomez for the Organization. Mike is actually the only one who knows the position of a plane that sank with a hundred million dollars and certainly a hundred million dollars are tempting to many, willing to do anything to get them. The hunt is open, but this time not to sharks.