Deep-sea mining for rare metals will destroy ecosystems, say scientists

Businesses want to trawl for nickel, manganese and cobalt to build electric cars and windfarms

An investigation by conservationists has found evidence that deep-seabed mining of rare minerals could cause extensive and irreversible" damage to the planet.

The report, to be published on Monday by the international wildlife charity Fauna & Flora, adds to the growing controversy that surrounds proposals to sweep the ocean floor of rare minerals that include cobalt, manganese and nickel. Mining companies want to exploit these deposits - which are crucial to the alternative energy sector - because land supplies are running low, they say.