The 'deepest man on earth'

Herbert Nitsch broke the record for deepest free dive but fell asleep on the way back up

Herbert Nitsch is a free diver, he dives without breathing equipment. In 2012 he broke a new world record, diving to a depth of 253 metres but on the way back up things went wrong.

Presenter: Asya Fouks
Producer: Tom Harding Assinder