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Explore 3 published pages tagged with Sand Dollar Anatomy, grouped automatically from article text, entity focus, and recurring topical signals.
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marine biology
The term "skin" in sand dollars commonly refers to the outer living tissues of the animal, distinct from the hard internal test (skeleton). In living sand dollars, this outer la...
Open articleMarine Zoology
A sand dollar is a flat, burrowing sea urchin in the order Clypeasteroida, well known for its rigid, white test that washes up on beaches. Unlike many shallow-water urchins, san...
Open articlemarine biology
The bottom of a sand dollar is the oral surface, opposite the spiny upper side. When you hold a sand dollar with the flat underside facing up, you are looking at the oral surfac...
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