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Sea Urchins Sport Self-Sharpening Teeth

Posted on Tuesday, January 11th, 2011 at 1:00 pm by
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National Geographic News published a great article on the scientific reasoning for the never diminishing sharpness of sea urchin’s rock-crushing chompers. Researches used high-resolution x-ray imaging to discover that the urchin’s teeth are a combination of two types of calcite crystals that overlap in a crosswise pattern. The teeth peel away as they become weak exposing sharper layers. This discovery could potentially offer advancement for manmade tools that are not fully optimized.

Check out the National Geographic Ocean News Page for more in depth information.

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One Response to “Sea Urchins Sport Self-Sharpening Teeth”

  1. Adrian Miller says:

    Thanks for the interest in this work! If anyone would like to know more about the science behind this story, we’ve set the original paper free to access until the 4th of February; you can find it here:

    Adrian Miller
    Advanced Functional Materials

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