The Underwater City poster
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The Underwater City

5.319621h 18mNRMovieScience Fiction

An engineer, a psychologist and several other disparate types take part in an experiment to see if people can live for extended periods of time in a city built under the ocean.

DirectorFrank McDonald
WritersOrville H. Hampton·Alex Gordon
ProducerAlex Gordon

Where to watch

Availability shown for United Kingdom · rights vary by country

Cast · Directed by Frank McDonald

WLWilliam Lundigan
William Lundigan
Bob Gage
JAJulie Adams
Julie Adams
Dr. Monica Powers
RRRoy Roberts
Roy Roberts
Tim Graham
CRCarl Benton Reid
Carl Benton Reid
Dr. Junius Halstead
CD
Chet Douglas
Chuck Marlow
PDPaul Dubov
Paul Dubov
George Burnett
KNKaren Norris
Karen Norris
Phyllis Gatewood
KBKathie Browne
Kathie Browne
Dotty Steele
EM
Edward Mallory
Lt. Wally Steele
ECEdmund Cobb
Edmund Cobb
Meade (uncredited)
GD
George DeNormand
Dr. Carl Wendt (uncredited)
PP
Paul Power
Author in Visiting Party (uncredited)

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More from Julie Adams · Co-star actress

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More from Frank McDonald · Director

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The Underwater City — streaming FAQ

Which OTT platform streams The Underwater City?

The Underwater City isn't on any subscription service in United Kingdom right now, but you can rent or buy it on Apple TV Store, Amazon Video and Google Play Movies. It's not on Netflix.

Is The Underwater City on Netflix?

No, The Underwater City is not on Netflix in United Kingdom as of September 2026. You can rent or buy it on Apple TV Store and Amazon Video.

Is The Underwater City on Amazon Prime Video?

The Underwater City isn't included with a Prime Video subscription in United Kingdom, but you can rent or buy it on Amazon Video.

Where can I watch The Underwater City for free?

The Underwater City isn't available free in United Kingdom; you can only rent or buy it on Apple TV Store and Amazon Video.