"Robotic ghost knifefish" sounds like an affiliate member of the Wu-Tang Clan, but it's actually an awesome aquatic automaton built by researchers at Northwestern University. Check out this marine machine in motion.
MIT's latest robotic fish may not look like much on land, but once it gets in the water, it swims just like the real thing. And it could be an ideal tool for underwater exploration.
Robots can already mimic people, dogs, cats and insects. They can even walk on water. Now roboticists at the University of Washington have built a school of three robotic fish that swim and communicate wirelessly with one another using sonar signals. So far the fish are swimming happily in a laboratory tank, but…