Trapped in dark for 35 hours Red Sea dive-boat survivors tell terrifying escapes

Reminds me of this older story, of Harrison Okene, who was trapped in a capsized boat at the bottom of the ocean for 3 days: https://www.theguardian.com/lifeandstyle/2023/sep/26/i-survi...

video of his rescue: https://www.youtube.com/watch?v=um1ym9u8XaA

Randomly, the next year, he rescued his friend when their car goes off a bridge into water. He later became a diver!

How could 3 adults, even lying perfectly still, not use up all the oxygen in that air pocket within 35 hours?

I thought human beings needed several cubic meters of fresh oxygen (at 1 atm) per hour…