engineers at osaka city university recently exhibited a small robotic fish that is powered by an equally small fuel cell. the fish’s fuel cell, designed by the university, is a ‘cylindrical solid-polymer fuel cell called power tube’. a magnetic actuator is attached to the fish’s one joint, propelling it forward. to change directions the fish has a small weight which shifts around to change the center of gravity. the fuel cell uses hydrogen peroxide to supply oxygen even under water. the researchers hope the fish will be able to swim continuously for up to three days. it could one day be put to use in marine rescue and survey missions with the addition of a camera.

http://www.eng.osaka-cu.ac.jp/index_e.html

fuel cell robot fish

fuel cell robot fish

via diginfo