Ok, so as far as we know, this robotic ray will not have a role to play in law enforcement. But you can’t let silly things like the truth get in the way of a good headline.

Published in the journal Science this week, scientists from Harvard unveiled a “bio-inspired swimming robot that mimics a ray fish can be guided by light.” The 1/10th-scale version of a ray fish has a tiny gold skeleton and rubber fins, which are powered by rat heart muscle. Shining a light on the robot causes the muscle to contract and the fins to wave, propelling the tiny robot through the water. 


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