If I understand correctly, sound waves are formed by a vibrating something causing slight compressions and depressions in the air.
This works out just fine because gasses can be compressed and depressed, but liquid cannot. When sound travels through solid objects (say, a wall for example) the waves vibrate that object. This, in turn, vibrates the air on the other side of the wall causing waves that eventually hit our ear. Right?
So how is it that sound waves can travel through water? Better yet, how is it that sound travels further and faster through water? What sort of waves are our ears picking up when one is completely submerged and a sound. (a popping knuckle or someone “yelling” underwater)