
The Neptune Factor
The most fantastic undersea odyssey ever filmed.
1973 • 98 min • Action · Science Fiction
Synopsis
When an underwater ocean lab is lost in a earthquake, an advanced submarine is sent down to find it and encounters terrible danger.
Our family guide
Best from age 7- 0 Reviewers · 2 · 51%
- 51 Audience · 56 · 49%
An underwater lab is lost after an earthquake, prompting a deep-sea rescue mission. An advanced submarine crew faces peril and encounters large, unknown sea creatures in the ocean depths during their search.
- Violence & peril
- 3/10
- Language
- 1/10
- Drinking, drugs & smoking
- 1/10
- Romance & sensuality
- 1/10
- Scary moments
- 4/10
Heads up
- Scenes of peril in the deep ocean
- Encounters with large, unusual sea creatures
What it models well
- Courage in the face of danger
- Teamwork and cooperation
- Scientific exploration
Talk about it after
- The mysteries of the deep sea
- How natural disasters impact our world
- The importance of rescue efforts
Written by the Movie Knight editorial team for The Neptune Factor. Our own words, our own scoring — always double-check against your family's standards.
Where to watch
Stream
- Amazon Prime Video
- Filmin
- Amazon Prime Video with Ads
Links go straight to each service. Some are affiliate links that support Movie Knight at no cost to you. Availability data by JustWatch via TMDB.
Top billed cast
Director: Daniel Petrie • Crew: Jack DeWitt

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

Leslie Carlson
Brigs, Triton Radioman

Stuart Gillard
Diver Phil Bradley
Trailers & clips
The Neptune Factor (1973) ORIGINAL TRAILER [HD]
Reviewer notes
Not recommendedTrusted family reviewersI thought that the combination of Walter Pidgeon and Ernest Borgnine might bely my initial thoughts that this would just be another mediocre TV adventure movie. Sadly not, for thats exactly what it is. A submarine descends to the unknown depths of the ocean to rescue the crew of a lab that has been damaged in an earthquake.…
Not recommendedTrusted family reviewersTake one toy submarine, add some fishing line to the top of it and have it "explore" your aquarium. This is sadly the extent of the action in this C- movie. It is a huge waste of the talented actors and was an even larger waste of my time in watching it. I have no problem with campy movies, and this was the reason I watched this flick, but Jason and the Argonauts this ain't.…
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Gallery
Details
- TMDB audience
- 5.1/10 (56)
- Age rating
- G
- Status
- Released
- Budget
- $2,500,000
- IMDb
- tt0070438

Amazon Prime Video
Filmin
Amazon Prime Video with Ads









