Daring Game

Daring Game is a 1968 drama film starring Lloyd Bridges and Nico Minardos, filmed at the Ivan Tors studio in Miami and in the Bahamas. The working title was "The Unkillables".
Plot.
Survival Devices, Inc., is an organization that employs a team of adventurers known as "the Flying Fish" who are adept in sky diving, scuba diving and martial arts. They are engaged to rescue a captured scientist imprisoned on a Caribbean island by a dictator.
The team parachutes off the coast of the island in a HALO jump and establishes an inflatable underwater basecamp in an "Instant Underwater Habitat" or "Igloo".
Production notes.
A Chase YC-122 Avitruc hired by the producers crashed en route from Fort Lauderdale to Bimini.
Ricou Browning directed the underwater sequences.