[itishappy]

You can experienced this in pools! 12ft of water adds an extra 1/3 atmosphere of pressure, compressing the gas in your body by 25%. (That's why your ears pop!)

By varying the amount of air in your lungs, you can choose which depth to be neutrally buoyant at. Weirdly fun!

[eternityforest]

Or at least, you can if you don't sink instantly at any depth!