Eli5: Where does the air on the lungs of deep divers go to?

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Let’s say someone is trying to get the world record for deepest dive without equipment. They inhale all the air they can and start going down, but as they go, their lungs decrease in size even though they’re still holding the same amount of air. Surely all the air being compressed has to go somewhere at some point, right? Am I missing some really basic concept?

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3 Answers

Anonymous 0 Comments

It doesn’t go anywhere, it just gets compressed. You can have one cubic meter of air at atmospheric pressure (I believe 14.7psi?) and compress it down into the size of say a shoe box. Same amount of air, just higher pressure.

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