water 2000m down is the same density as 20cm down
The density would be different due to the different temperature of the water at those depths though....
Conceded, but it’s the North Atlantic, so the temperature difference wouldn’t be as great as, eg, in the Caribbean.
Even if the water surface was 30C, you'd still only see a handful of Pa difference down to 0C at the seabed.
@Leshaches started
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The density would be different due to the different temperature of the water at those depths though....