Last Breath is a 2019 British documentary film directed by Richard da Costa and Alex Parkinson.

It relates the story of a serious saturation diving accident in 2012, when diver Chris Lemons had his umbilical cable severed and became trapped around 100 metres (330 ft) under the sea without heat or light, and with only the small amount of breathing gas in his backup tank.

This caused the vessel to drift in rough seas, dragging the divers away from the area they were working and eventually snapping the umbilical tether that provided Lemons with heliox to breathe, as well as hot water to heat his suit, power for his light, and a communications link to the surface.

[2] For reasons that are unclear to Lemons and his colleagues, but attributed in part to the cold water and having been breathing a gas mix with a high partial pressure of oxygen, Lemons survived for around 30 minutes while he was located by a remote underwater vehicle and then by Yuasa, who was able to pull him back onboard the diving bell.

Empire gave it three stars, describing it as 'a great story' but comparing it unfavourably to similar survival documentaries such as Touching the Void.