Sand at the beach

You make it sing by shuffling your feet like a penguin.

Spending time at the beach. Drawing in the sand ;-

Scattered along the beaches of both the East and the West Coast, you sometimes see hard, flat discs with a faint five-pointed star pattern on one side. Although they seem like chalk or compacted sand, they are actually the *tests*, or skeletons, of a type of sea creature called a sand dollar. Shell collectors prize sand dollars for their beauty, but you need to handle them carefully to take one home intact.