Sky News 
March 29, 2013
A robot jellyfish more than 5ft wide has been shown off by researchers in America.
The lifelike invention could one day conduct military surveillance, clean oil spills and monitor the environment.
It is part of a multi-university project for the US Navy that is being led by Virginia Tech  professor Shashank Priya.
The Robo-Jelly is being designed to operate on its own energy for up to several months and has a silicone skin that protects the electronics inside.
It moves using eight mechanically controlled arms.