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  • Yes. The energy of the sudden collapse would transfer into surrounding water, which carries sound much better than air does. Additionally, water doesn’t compress, so the water 2000m down is the same density as 20cm down.

  • 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....

  • Yeh but we're talking decimal points between 0C and - say - 13C at the surface of the Atlantic.

  • Conceded, but it’s the North Atlantic, so the temperature difference wouldn’t be as great as, eg, in the Caribbean.

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