Latitude Zero

Three deep sea explorers find themselves trapped underwater after an earthquake. Their rescue comes from a submarine whose captain, Mackenzie, has several unusual characteristics, not the least of which is his age. The explorers are taken to Latitude Zero, an underwater paradise located fifteen miles below the surface of the Pacific Ocean.

Once there, a whole new world with its own brand of problems is discovered. The explorers must decide whether or not to stay within their new paradise or to return to familiar environs on dry ground above.