When an underwater ocean lab is lost in a earthquake, an advanced submarine is sent down to find it and encounters terrible danger.
as Cmdr. Adrian Blake
as Dr. Samuel Andrews
as Chief Diver Don MacKay
as Dr. Leah Jansen
as Diver Bob Cousins
as Capt. Williams
as Dr. Hal Hamilton
as Diver Dave Moulton
as Brigs, Triton Radioman
as Diver Phil Bradley
as Dr. Norton Shepherd
as Warrant Officer
as Dobson
as Diver Stephens
as Diver Thomas
as Hawkes
as Sub Captain
as Kay, lab technician
as Lt. Hobbs, Halifax day officer
as Radio Officer
