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Self-sharpening sea urchin teeth may inspire ever-sharped tools

By Damir Beciri
3 Comments28 December 2010

sea-urchin-handIn order to survive in a tumultuous environment, sea urchins literally eat through stone. Sea urchins use their teeth to carve out nooks where they hide from predators and protect themselves from the waves. Despite constant grinding and scraping on stone, urchin teeth never get dull. This ability has puzzled scientists for decades, but researchers… »