

“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.
Directed by Daniel Petrie

Ben Gazzara
Cmdr. Adrian Blake

Walter Pidgeon
Dr. Samuel Andrews

Ernest Borgnine
Chief Diver Don MacKay

Yvette Mimieux
Dr. Leah Jansen

Donnelly Rhodes
Diver Bob Cousins

Chris Wiggins
Capt. Williams

Michael J. Reynolds
Dr. Hal Hamilton

Mark Walker
Diver Dave Moulton