Difference between revisions of "Sea urchin"
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| − | ''' | + | A '''sea urchin''' is a marine animal of the class Echinoidea, [[echinoderms]] that have a soft body enclosed in a round, symmetrical, calcareous shell covered with long spines. |
[[Category:Echinoderms]] | [[Category:Echinoderms]] | ||
Revision as of 18:02, August 2, 2008
A sea urchin is a marine animal of the class Echinoidea, echinoderms that have a soft body enclosed in a round, symmetrical, calcareous shell covered with long spines.
