Why in a sea shell do you hear a breathing like sound?

Question

this is a random question i have a pretty counch or somthing like that from London and i wanted to know why you hear the "ocean" (people say)??

Answer 1

It's the echoing of the sounds made when the conch approaches your ear. The sound waves will start to bounce to and fro, and the shell will make it sound a little hollow.

When the conch is held against your ear, the movement of the conch against your ear will make even more sound, which is then echoed as well.

Answer 2

Its the echo of the blood rushing by your ears, it can be done with any thing like a glass or cup too, or even your hand.