Robotic Knife-fish Takes to the Water!
"A robot with an unusual swimming style is doing laps in a pool at the University of Bath in the UK.
Gymnobot is powered by a single fin that runs the length of its body. Waves rippling along the fin generate thrust, a mode of propulsion borrowed from the freshwater knife fish of South America.
"This form of propulsion is potentially much more efficient than a conventional propeller and is easier to control in shallow water near the shore," says William Megill, an engineer with an interest in biomimetic designs working with colleagues on the project." View complete article at NewScientist.com.