Amazing! It uses water as fuel!
A platinum coated robotic jellyfish uses chemical reactions between oxygen and hydrogen that happen in water to power itself.
It's a bio-inspired robot, with artificial muscles, powered by the heat from the chemical reactions in the water, which cause the "muscles" to contract, just like a real jellyfish.
It still needs some sort of catalyst to split the water into its separate components (oxygen and hydrogen) but they might just have a solar powered fueling station floating on the water's surface to solve that problem.
Check out the above video to see it swimming around, eerily similar to how a real jellyfish does.
Tags: hydrogen, jellyfish, oxygen, robojellyfish, robot, robotic, water