This Robotic Crab Will Scuttle the Sea for Historic Sunken Treasures

One problem with conventional ROVs is that while their propellers are plenty strong enough to kick up columns of silt from the sea floor, they typically lack the power to effectively navigate in strong currents, which limits where and how well they can survey a given area. But this new underwater explorer sidesteps… » 7/22/13 11:30am 7/22/13 11:30am