Sand dollar's circular appearance is due to it's hard shell like structure called the Test that is circular. the test is covered by the spiny skin.
In the sand
Sand dollars typically range in size from about 3-5 inches in diameter, with some species growing as large as 6 inches. They are flat, circular echinoderms that are commonly found along sandy shores and shallow waters.
You can not cheat to get sand dollars. You have to work for it, or you have to buy it.
Sand dollars breathe through a process known as diffusion, using their tube feet.
Sand dollars.
sand dollars got there name because they are shaped like a coin and they dig themselves into the sand
Phylum Echinodermata
Sand dollars don't protect themself, they just sit their........ :)-
what is the sand dollars kingdom
No, sand dollars mainly eat small worms and algae.
Sand Dollars are about the size of a grown human hand when fully grown. They cannot eat humans.
No