63%User score 63 percent
Underwater
2020 · Horror · Science Fiction
User Score
501 votes
A Fantastic and Spectacular Voyage... Through the Human Body... Into the Brain.
In order to save an assassinated scientist, a submarine and its crew are shrunk to microscopic size and injected into his bloodstream.
Recommendations based on this film
John Chard
January 7, 2019
Combined Miniature Deterrent Forces A medical and science crew board a submarine and are miniaturised and injected into an important foreign scientist's body. The mission is to remove a blood clot on his brain that was suffered during an assassination attempt. Once shrunk and in their new bodily world, the team must battle the body's defence systems as well as avoiding trouble with the major organs. Also on a clock o…
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Peter McGinn
February 20, 2021
I remember I really liked this movie when I was a teenager, along with the novel by Isaac Asimov that was based on the screenplay. (I never read the original story they based the screenplay on.) It was adventurous fun. I don’t recall if I was titillated by the presence on the cast of Raquel Welch, though they showed great restraint in having her covered up most of the time by the special submarine suit. I wasn’t as i…
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CinemaSerf
January 6, 2026
Back in the days of three-channel telly in Britain, this was one of the regular sci-fi staples that I really quite enjoyed as I grew up. It features “Messala” himself - Stephen Boyd, only this time he is being placed into a submarine with “Cora” (Raquel Welch) and “Michaels” (Donald Pleasence) and then shrunk. They are to be injected into the bloodstream of a scientist with a view to navigating his internal system, a…
Read the full review on TMDBReviews are written by the TMDB community, not by Fantastic Voyage's publisher.
