Sea Urchins' Digging Teeth are Designed to Stay Sharp
Monday, May 4, 2009 - 15:00
in Biology & Nature
(PhysOrg.com) -- Sea urchins dig themselves hiding holes in the limestone of the ocean floor using teeth that don`t go blunt. Weizmann Institute scientists have now revealed their secrets, which might give engineers insights into creating ever-sharp tools or mechanical parts.