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sand dollar rug sand dollar What are sand dollars? Sand dollars are animals! Features: They got their name because they resemble a onedollar coin. Coat of spines: Instead of the .Sand Dollars (people usually refer to the southern Keyhole Urchin as a Sand Dollar, too) are approximately 3inch, cookieshaped creatures which live near shore .Photo courtesy of the Monterey Bay Aquarium. I am the western sand dollar, scientifically known as Dendraster excentricus. Contrary to popular belief, I am .Ohio boy vacationing with his family in Florida discovered what his family believes could be a new record for the world's largest sand dollar..Sand dollars are living sea creatures that belong to a family of sea urchins and starfish. They typically congregate in hundreds along the New .In their sandy seafloor habitat, sand dollars use their fuzzy spines, aided by tiny hairs (cilia), to ferry food particles along their bodies to a central mouth on their .Sand dollars are shaped like flatte...