Tonight's look at a Resemblance takes us to the beach to look at sand dollars. The term "sand dollar" derives from the appearance of the tests (skeletons) of dead individuals after being washed ashore. The test lacks its velvet-like skin of spines and has often been bleached white by sunlight. To beachcombers of the past, this suggested a large, silver coin, such as the old Spanish or American dollar (diameter 38-40mm).
Other English names for the creatures include sand cake and cake urchin. In South Africa, they are known as pansy shells from their suggestion of a five-petaled garden flower.
In Spanish-speaking areas of the Americas, the sand dollar is most often known as galleta de mar (sea cookie); the translated term is often encountered in English.
The sand dollar is of a species of extremely flattened, burrowing sea urchins belonging to the order Clypeasteroida.
Src : Wikipedia
Other English names for the creatures include sand cake and cake urchin. In South Africa, they are known as pansy shells from their suggestion of a five-petaled garden flower.
In Spanish-speaking areas of the Americas, the sand dollar is most often known as galleta de mar (sea cookie); the translated term is often encountered in English.
The sand dollar is of a species of extremely flattened, burrowing sea urchins belonging to the order Clypeasteroida.
Src : Wikipedia
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