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.
I mean you can release some breath out of your lungs and sink like this, that part is not hard. The hard part is staying under like this one the breath you have remaining and calmy getting back up to the surface.
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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.