| NOUN | animal | sea urchin | shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells |
|---|
| Meaning | shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells. | |
|---|---|---|
| Member of | Echinoidea, class Echinoidea | sea urchins and sand dollars |
| Narrower | edible sea urchin, Echinus esculentus | A sea urchin that can be eaten |
| 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 |
| Spanish | equino, erizo de mar | |
| Catalan | eriçó de mar | |
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