“AquaJelly is an artificial autonomous jellyfish in water, a self-controlling system which emulates swarming behaviour. AquaJelly consists of a translucent hemisphere and eight tentacles for propulsion. At the centre of the AquaJelly is a watertight laser-sintered body. It houses a central electric motor, the two lithium-ion polymer batteries, the recharging control unit and the servo motors for the swash plate.”
(via)
Made by Festo.