But why everything sounds quieter to us under water?

But why everything sounds quieter to us under water?

But why everything sounds quieter to us under water? When sound moves from water into your ears (which contain air), most of the sound energy gets bounced back at the boundary between the water and air. Only a tiny bit of the sound energy actually makes it through to the parts of your ear that send signals to your brain It's a bit like throwing a ball against a wall - much of the energy bounces back instead of going through. Our ears evolved to work really well in air, not water. This is why things often sound muffled or quieter when you're in the swimming pool, even though the sound is actually travelling faster through the water!