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The two farms are 13 miles off the north-east coast of Scotland and include some of the biggest wind turbines in the UK, at 257m high.

For example, the government is reportedly weighing up proposals for a Chinese company to supply wind turbines for an offshore windfarm in the North Sea.

Many others, such as those for producing clean electricity and manufacturing clean energy components like wind turbine parts, solar panels and batteries, would be phased out earlier or made harder and less worthwhile to secure.

These minerals and the lithium could - if recovered - be reused for green technologies such as electric car batteries or in wind turbines.

The scientists searched for fingerprints of giant icebergs using very detailed 3D seismic data, collected by oil and gas companies or wind turbine projects doing ocean surveys.