Minesto's fully operational Dragon 12 looks like some sort of futuristic military drone – but it behaves remarkably like a kite underwater. It uses lift generated by tidal flows to fly patterns faster than the currents, harvesting renewable energy.
A 28-ton, 1.2 MW tidal kite is now exporting power to the grid::undefined
I guess these would be more useful in the far north and far south. How do they sound under the water and does it affect marine life?