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







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