RoboKrill is a one-legged robot that mimics the way krill swim

The RoboKrill robot has appendages (right) that move like krill's swimming legs through water A robotic leg moving through water creates similar patterns to the motion of krill as they swim, and could be used to study the role these animals play in their marine environment. Krill are small crustaceans that serve as one of the most important and largest ocean food sources.