News tagged with rocky limestone

Sea Urchins' Digging Teeth are Designed to Stay Sharp

(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 ...

Biology / Plants & Animals

May 04, 2009 | 5 / 5 (1) | 0