Sci-fi alien or technology breakthrough? Rat-fuelled jellyfish
is just like the real thing  Multi-limbed “Medusoid” is made of
transparent elastic silicone and swims with the help of
pulsating rat heart cells  Fishy: The artificial jellyfish
replica made from silicone polymer and rat heart cells   But
real-life scientists created the multi-limbed “Medusoid” which
swims with the help of pulsating rat heart cells.  The
artificial creature, measuring several centimetres across, is
made of transparent elastic silicone.  It propels itself through
water with pumping movements when stimulated with electricity,
but has no brain - yet.  Experts hope to evolve self-contained
future versions that are able to respond to their environment,
and even seek energy or food.  Tissue engineers in the US based
the design of the Medusoid on the jellyfish, believed to be the
most primitive multi-organed animal.  Jellyfish swim using
rhythmic movements similar to that of the human heart.
Scientists achieved the same result by seedi