

The most fantastic undersea odyssey ever filmed.
When an underwater ocean lab is lost in a earthquake, an advanced submarine is sent down to find it and encounters terrible danger.
Daniel Petrie
Dr. Hal Hamilton

Mark Walker
Diver Dave Moulton

Leslie Carlson
Brigs, Triton Radioman

Stuart Gillard
Diver Phil Bradley
Ed McGibbon
Dr. Norton Shepherd
David Renton
Warrant Officer