RoboTuna, c 2000.
© Science Museum / Science & Society Picture Library
View showing the mechanism. Built to simulate the action of a fish, the RoboTuna was designed by American engineers at the Masachusetts Institute of Technology, (MIT), to see if a robot sub could mimic the way tuna swim. The metallic tuna proved to use les energy and to be more manoeuvrable than other robot subs.