News tagged with sea urchins
Dental delight! Tooth of sea urchin shows formation of biominerals
Dec 21, 2009 |
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(PhysOrg.com) -- Some of the most common minerals in biology, including those in bones and shells, have a mysterious structure: Their crystals are positioned in the same orientation, making them behave as ...
Enigmatic sea urchin structure catalogued
Jun 09, 2009 |
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A comprehensive investigation into the axial complex of sea urchins (Echinoidea), an internal structure with unknown function, has shown that within that group of marine invertebrates there exists a struct ...
Abalone are treasured -- nearly to extinction
May 13, 2009 |
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The authorities popped him near the docks in Port Angeles. On a March afternoon in 1994, a sleek fishing boat -- not-so-subtly named the Abalone Made -- came ashore after puttering around Freshwater Bay. The waiting cops ...
A crystal clear view of chalk formation
Jan 23, 2009 |
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(PhysOrg.com) -- It has a beautiful, but also an unpleasant side: crystallization determines the shape of precious stones, but also causes the lime scale in washing machines. How this comes about, has been ...
Acidification of the sea hampers reproduction of marine species
Jul 29, 2008 |
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Within 100 years, it is reckoned that the world's seas will be three times as acidic as they are now. The lower pH may strike a severe blow to the ability of marine species to reproduce, according to research on sea urchins ...
