There wasn't any aborting of the dive, it went to plan going down and back up, until he blacked out during ascent at 100 m ("I lost consciousness due to narcosi

There wasn't any aborting of the dive, it went to plan going down and back up, until he blacked out during ascent at 100 m ("I lost consciousness due to narcosis (a first in free diving)"). The rescue divers surfaced him as he was unconscious, and then he asked for oxygen (presumably 100%) to do some (emergency) decompression at 10 m for 20 min. Here's a statement from the guy: https://www.deeperblue.com/herbert-nitsch-talks-about-his-fateful-dive-and-recovery/ https://www.deeperblue.com/herbert-nitsch-talks-about-his-fa... Red Bull—naturally—also produced a whole movie about the thing: https://www.youtube.com/watch?v=lcrz2YNBAw8 https://www.youtube.com/watch?v=lcrz2YNBAw8