Dale Drewer

Richard Garland

Acting

Dr. Martha 'Marti' Hunter

Pamela Duncan

Acting

Hank Chapman

Russell Johnson

Acting

Dr. Karl Weigand

Leslie Bradley

Acting

Jules Deveroux

Mel Welles

Acting

Dr. James Carson

Richard H. Cutting

Acting

Seaman Ron Fellows

Beach Dickerson

Acting

Seaman Jack Sommers

Tony Miller

Acting

Ensign Quinlan

Ed Nelson

Acting

Seaman Mac, wears sunglasses

Charles B. Griffith

Writing

Diving-double for male cast

Maitland Stuart

Acting

Diving-double for Pamela Duncan

Robin Riley

Acting