If you hold up a seashell to your ear and listen, you may hear what sounds like rolling waves and wind. But it’s not actually the ocean. Now that we’ve got that out of the way, what exactly is it that ...

They also don’t hear the blood going through their veins, although that is a popular misconception. What is it exactly that causes the roaring sound when the shell gets close to your ear? Children are ...

Dear Matthew Alice: My mother showed me a trick to do with a big shell she has, and I want to know how it works. When I put the shell on my ear, I can hear the ocean that it came from. How does that ...