how much oxygen is there in the air pockets in underwater caves, and is it replenished somehow?
In: Biology
One thing to keep in mind is that said air pocket would be pressurized by the weight of the water above it. Our atmosphere is made up mostly of nitrogen, and at high pressures like what you might experience 100ft underwater your lungs will actually absorb more nitrogen than oxygen leading to something called nitrogen narcosis. So even if there is oxygen in an air pocket you might not even be able to breathe it.
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