Underwater (2020) runs 1 h 35 min, is rated PG-13 in the US and averages 6.3 from 3,720 TMDB members. After an earthquake destroys their underwater station, six researchers must navigate two miles along the dangerous, unknown depths of the ocean floor to make it to safety in a race against time.
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Streaming availability by JustWatch. In the US, as of 2026-11-04: Amazon Prime Video (subscription), fuboTV (subscription), YouTube TV (subscription), FXNow (subscription), Amazon Prime Video with Ads (subscription).
Underwater on TMDB · This product uses the TMDB API but is not endorsed or certified by TMDB.

Lights Down is a free tool: tell it your streaming services and how long you have, and it ranks what you can stream tonight, with a this-or-that, a roll, a bracket and a wheel. Movie data from TMDB; streaming availability by JustWatch. Page updated 2026-11-05. This product uses the TMDB API but is not endorsed or certified by TMDB. Lights Down is a Somebody Decide program. How the data works · Legal & privacy · Tonight's lists