Currently available on 3 streaming services.

The Underwater City streaming: where to watch online?

You can buy "The Underwater City" on Amazon Video, Apple TV, Fandango At Home as download or rent it on Amazon Video, Apple TV, Fandango At Home online.

Cast

William Lundigan
Bob Gage
Julie Adams
Dr. Monica Powers
Roy Roberts
Tim Graham
Carl Benton Reid
Dr. Junius Halstead
Chet Douglas
Chuck Marlow
Paul Dubov
George Burnett
Karen Norris
Phyllis Gatewood
Kathie Browne
Dotty Steele
Edward Mallory
Lt. Wally Steele