We'd explain this thing, but we're really having trouble taking our eyes off of it long enough to string some full sentences together. Suffice it to say Festo 's AirJelly is powered by some magical jelly fish properties, a lithium-ion battery, an electric motor and a bit of helium. If that's not floaty enough for you, there's also a water version, AquaJelly. Videos of both are after the break.