The sand dollar (Clypeaster sp. Family Clypeasteridae) a flat, round type of sea urchin, is specially adapted to burrowing in sand. The star shape is due to its set of five pores arranged in a petal-like pattern through which it moves sea water into its internal water-vascular system. It's the latter that allows the sand dollar to move about. A link is provided below.
Sand dollars look like round white coins, which is how they got their name.
Sand is not found in the sand dollar. May be when you collect a dead sand dollar from beach it has sand encrusted on their hard shell.
there dead I believe
Star fishes and sea urchins are similar to sand dollars.
A sand dollars crawls but it is not a reptile. It is a Echoinoderm related to sea urchin and star fish.
Sand dollars have these cilia or hair-like structures underneath them that are used like legs. They are used for locomotion and if they are not moving (especially for a long period of time), they are probably dead by then.
Both the mouth and the anus are on the back side of the sand dollar. The hard outside is called the test. A sand dollar is related to sea urchins and star fish.
Sea shells, sea glass, sand dollars, star fish, beach pebbles, drift wood, sand, crab shells, and shark teeth.
In the sand
You can not cheat to get sand dollars. You have to work for it, or you have to buy it.
Echinoderms, which include star fish, sand dollars, and sea urchins have an oral plate.
Sand dollars.
Sand dollars breathe through a process known as diffusion, using their tube feet.
sand dollars got there name because they are shaped like a coin and they dig themselves into the sand
Sand dollars don't protect themself, they just sit their........ :)-