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