Sand Dollar Anatomy Diagram
Sand Dollar Anatomy Diagram. Sand dollars are flat, burrowing, sea urchins that are small, round and fairly smooth. These designs were a scallop shell, a starfish and a sand dollar.
The holes on the top surface are where the eggs and sperm are. These invertebrates have a hard skin made of calcium carbonate plates. It is commonly known as “sand dollar” and is a marine echinoderm found buried in sand at the bottom of sea.
posted by deingw @ January 07, 2024
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