"In this breathtaking experience, former deep sea diver Chris Lemons will lead you on a guided tour of the relatively unknown ...

which the film stresses without the need for additional action movie obstacles -- the currents he's swimming against are powerful enough to make any additional deep-sea antagonist unnecessary.

The movie is based on the 2019 British documentary Last Breath, created by Parkinson and Richard da Costa. Similar to the documentary, Last Breath revolves around a team of deep-sea divers who ...