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Harrison Okene, who breathed at the bottom of the sea
Sixty hours in an air pocket in a capsized tugboat, thirty metres down.
In May 2013 the tugboat Jascon 4 capsized off Nigeria and sank. Okene, the ship's cook, was in the bathroom when it rolled. Eleven crew died. He found a pocket of trapped air in a cabin and stayed in it.
He was in total darkness, in water around 30°C, for roughly sixty hours, hearing, as he later described it, fish eating his colleagues. He had a bottle of Coca-Cola and nothing else.
A South African dive team arrived to recover bodies. A diver's hand was grabbed in the dark by a living man. The helmet-camera footage of that moment exists and is genuinely difficult to watch.
Okene should have died of decompression sickness from ascending after three days at that pressure; he was put into a decompression chamber for two and a half days and came out fine. He has since, and this is the part that beggars belief, qualified as a commercial diver.