Description
In the U.S., the common name for the Echinarachnius parma species is “eccentric sand dollar,” or simply “sand dollar” for short. The name derives from the animal’s resemblance to dollar coins, of course; however, it also goes by “sand cake,” “sea biscuit,” and “cake urchin,” or, in New Zealand, “sea cookie” and “snapper biscuit.” In South Africa, it’s often called a “pansy shell” for its flower-like pattern.
