A robot made to look and swim like a jellyfish has got even more realistic says a researcher working on the motion peace of the machine. The robot, known as robojelly was developed for the office of Naval Research in 2009 to spy on ships, submarines, detect chemical spills, and monitor the whereabouts of migrating fish.They did this by putting little wires, called bio shape memory alloy composites that when heated contract just like a muscle does.

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