*You hear beating on your tent when you are out on the beach. What is it?

I've set up a green tent right along the shoreline and I can hear what sounds like little hands hitting the tent. Baby stars like to venture down on the beach I've heard so I decided to press my luck and try to experience it myself. It was about 12 o'clock when I heard what sounded like puppy yawns and soft thuds against my tent. The little stars decided to pay me a visit.

Kell