Cast & Crew
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Ben GazzaraCmdr. Adrian Blake - Yvette MimieuxDr. Leah Jansen
- Walter PidgeonDr. Samuel Andrews
- Ernest BorgnineChief Diver Don MacKay
- Chris WigginsCapt. Williams
- Donnelly RhodesDiver Bob Cousins
- Ed McGibbonDr. Norton Shepherd
- Michael J. ReynoldsDr. Hal Hamilton
- David YorstonDiver Stephens
- Mark WalkerDiver Dave Moulton
- Ken PogueDiver Thomas
- Frank PerrySub Captain
- Dan MacDonaldLt. Hobbs
- Leslie CarlsonBrigs
- David RentonWarrant Officer
- Joan GregsonDobson
- Dave MannHawkes
- Kei FujiwaraKay
- Richard WhelanRadio Officer
- Daniel PetrieDirector
- Sandy HowardProducer