Put the shell next to your head and listen to the top 40.
It’s common practice for people to put seashells next to their ears so that they can hear a distinct whooshing sound, claiming that it’s the sound of the waves. It’s a pleasing sound, but it can get boring after a while. The Bay FM Sazae Radio also looks like a seashell, but won’t get boring because it has an actual FM radio inside. So you can lie on the beach and pretend to be listening to the sea when you’re actually listening to the top 40.