Here’s a controversial documentary that contains feats of daring as spectacular as the stunts in Mission: Impossible Dead Reckoning - Part One. It’s essentially an introduction to the niche, extreme sport of freediving (dives completed without the assistance of oxygen tanks, but closely watched by “safety divers”, who prove essential when blackouts occur). And watching The Deepest Breath is like being inducted into a cult whose members wish they were fish. It’s insanely absorbing and, be warned, deeply distressing.
