Last Updated: Thursday, October 11, 2012, 17:32
Present day deep-sea fauna like sea urchins, starfish and sea cucumbers may have evolved earlier than previously believed.
Last Updated: Friday, July 01, 2011, 13:48
Sea urchins have several genes that are coded for a widely occurring eye protein, opsin, reports the journal Proceedings of the National Academy of Sciences.
Last Updated: Saturday, January 15, 2011, 18:43
A study has found that overfished reef systems have more sea urchins—organisms that in turn eat coral algae.
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