Scientists build a robotic fish SoFi to spy on ocean life
(World News Science)

It looks like a fish. It swims like a fish. But it isn´t a fish. It´s SoFi, the robotic fish. Developed by researchers at the Massachusetts Institute of Technology, SoFi is a soft-bodied robot that glides silently through the water with a smooth, undulating motion designed to mimic the movements of real fish. It is the first robotic fish to contend with the currents and pressures of an actual ocean setting for an extended period of time. In a recent study in Science Robotics, the authors describe how SoFi can nimbly navigate a coral reef off Fiji in three dimensions, swimming up, down, left, right and forward, all at the behest of a diver armed with what looks like a Nintendo controller. The...