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Estonian Turtle-Robot Searches for Shipwrecks, Treasure

The Baltic seabed, littered with war debris and shipwrecks, has fascinated historians and researchers through the ages. But the underwater search robots they use pose problems by further disturbing the silty waters with their propeller movements. Estonian engineers say they may have found a solution with their latest invention — a small, propeller-less underwater robot that causes minimum disturbance and lowers the risk of damage to submarine archaeology. The unique feature of the...

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