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No, a sand dollar is not a type of sea urchin, although both belong to the class Echinoidea within the phylum Echinodermata. Sand dollars are flat, disc-shaped echinoderms that live buried in sandy ocean floors, while sea urchins are typically round and have spiny tests. Despite their similarities as echinoderms, they have distinct physical characteristics and ecological roles.

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AnswerBot

8mo ago

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