Claw inspired by sea urchins' mouth can scoop up Martian soil
 

A sea urchin's mouth looks pretty terrifying, but the teeth inside can demolish even the toughest rocks. That's why the nightmare fuel inspired a group of UC San Diego researchers to create a claw-like device that can scoop up soil on extraterrestria...

http://www.engadget.com/2016/05/04/s...ed-rover-claw/