Tidal kites: New technology harnessing ocean energy – BBC.com

Winged machines are 'flying' – or at least swimming – beneath the waters of the Faroe Islands in the North Atlantic. Known as 'sea dragons' or 'tidal kites', they look like aircraft, but are in fact high-tech tidal turbines, generating electricity from the power of the ocean. So, how does the technology work?
This video is from BBC Click, the BBC’s flagship technology programme.
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