This is a good example, it's a hydrophone recording of a glass sphere imploding, the level of sound and echo should give you a good idea of the kind of forces we're dealing with:
Wow. So those echoes are literally the sound waves propagating to the surface and reflecting back to the hydrophone on the bottom at 2.62km of depth, a round trip of 5.24km for each echo. That's also a really great example of how much faster sound propagates in water.