 Pressure
Pressure equals weight per unit of area. On land, we are at an atmospheric pressure of 1 bar, but this increases the deeper we go underwater. For every 10m of depth, atmospheric pressure increases by one. As freshwater is slightly less dense than salt water, the ratio is 10.3m to 1 atmosphere.
We calculate pressure the following way:
Pressure = pressure depth ÷ 10 + 1
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