No sushi from this Tuna

Navy plans robotic tuna. [Link]

Researchers at Boston Engineering and at the Franklin W. Olin College of Engineering created GhostSwimmer, which a refined version of an initial MIT prototype called RoboTuna. Since the tuna is one of the fastest fish in the oceans, the RoboTuna team reasoned, a robot that could mimic its movements would be an ideal underwater vehicle. RoboTuna — and, by extension, GhostSwimmer — resulted from an extensive study of the hydrodynamics of tuna motion and an intricate mimic design. GhostSwimmer swims by manipulating its dorsal (back), pectoral (chest), and caudal (tail) fins; like its biological namesake, it can reach up to 70 kilometers per hour.

This speed caught the eye of the Navy, who want to use GhostSwimmer as both a spy vehicle and a prototype for a future class of fuel-efficient submarines. After a few more years, we might have an entire school of robotic fish confusing the hell out of the rest of the ocean.