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this post was submitted on 22 Jun 2023
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So, I understand that because water is not compressible, animals without air in their bodies are safe at such high pressures in the deep sea, but what I'm wondering is what would it look like if a human in the deep sea was suddenly exposed to those pressures, as would happen if a submarine rapidly pressurizes? I know the lungs would collapse and whatnot because the air would be pressurized into I'm guessing a liquid, like how propane sloshes when under pressure in a tank, but what else? What causes the instant death? Maybe the water shoots into nose/mouth so fast it acts like a bullet and applies a bunch of force to the walls internally?
These are styrofoam cups that've been crushed by the pressure at the bottom of the ocean. The water isn't looking for your nose, it'd just crush your outsides into your insides until you hit a relative density, like the cup, but not as pretty. The air in your lungs would instantly compress and heat to several thousand degrees C, turning your insides back into your outsides. I think.
Ah okay that makes sense.
Do take what I say with a grain of salt, but my late night napkin math says that (assuming a now rectangular human that's 16 inches wide and 72 inches tall) a person should have a frontal surface area of 1100 inches, under 6000psi, that'd be about 6,800,000 pounds of pressure on them - instant death.