Also on these boards
Live Sand Dollars. Most people probably don't realize that sand dollars are not those bone-colored shells that we are all used to seeing. They are a type of starfish that's fuzzy, and in the case of these, with a slight purple tint. They sit at all angles on the bottom of the ocean. What we normally see is the outer shell after the fuzz has died off and left nothing but the skeleton.
Keyhole Sand Dollars. The term sand dollar (or sea cookie or snapper biscuit in New Zealand, or pansy shell in South Africa) refers to species of extremely flattened, burrowing echinoids belonging to the order Clypeasteroida. Some species within the order, not quite as flat, are known as sea biscuits. Related animals include the sea urchins, sea cucumbers and starfish.