Researchers at the Virginia Tech College of Engineering created Cyro, the jellyfish that is a robot. These robots can also serve as spies that will monitor the ocean environment. Normally robots cannot last that long underwater and survey everything Cyro will be able to. Not even the Navy has been able to recreate a robot that is as similar in look, and motion as the real animal. While the robot can only swim for 4 hours on a rechargeable battery, for now, they are looking into ways to make it last longer. 

Check out the full article on CNN.