Meaning | shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells. |
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Member of | Echinoidea, class Echinoidea | sea urchins and sand dollars |
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Narrower | edible sea urchin, Echinus esculentus | A sea urchin that can be eaten |
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heart urchin | sea urchin having a heart-shaped body in a rigid spiny shell |
sand dollar | flattened disklike sea urchins that live on sandy bottoms |
Broader | echinoderm | marine invertebrates with tube feet and five-part radially symmetrical bodies |
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Spanish | equino, erizo de mar |
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Catalan | eriçó de mar |
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