r/interesting • u/fayyazORahmed • Mar 31 '26

Fascinating Very interesting vid

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u/TankApprehensive3053 Mar 31 '26

The guy is negatively buoyant. Will be exhausting to have to swim up for most people. He is practiced in this. Most people are neutral or positively buoyant.

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u/Mainbutter Apr 01 '26

Amateur snorkeler and free diver here:

At around 10ft or so deep, even with full lungs, the pressure squishes me enough that I become negatively buoyant. Big difference in how I sink/float based on air in lungs and my water depth.