On screen
Cast
20 credited performers
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
Leslie Carlson
Brigs, Triton Radioman
Stuart Gillard
Diver Phil Bradley
Artwork unavailable
Ed McGibbon
Dr. Norton Shepherd
Artwork unavailable
David Renton
Warrant Officer
Joan Gregson
Dobson
Artwork unavailable
David Yorston
Diver Stephens
Ken Pogue
Diver Thomas
Artwork unavailable
Dave Mann
Hawkes
Artwork unavailable
Frank Perry
Sub Captain
Kei Fujiwara
Kay, lab technician
Dan MacDonald
Lt. Hobbs, Halifax day officer
Artwork unavailable
Richard Whelan
Radio Officer