Several years ago, a joint team from Canada’s York, McGill and Dalhousie universities created AQUA, an underwater swimming robot. AQUA has six flippers, three on each side, and uses them to paddle through the water – it’s somewhat reminiscent of a platypus, albeit a six-legged one. Using a different set of appendages, it can even swim underwater, then proceed to sort of slap its way onto and across dry land. All of this is very cool in and of itself, but the little robot now has a new ability: it can receive commands visually underwater, thus freeing it from cumbersome umbilical cords.
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