25-ton mining robot stranded on Pacific Ocean floor in deep-sea trial
Critics, including environmentalist David Attenborough, say seabed mining is untested and has a largely unknown environmental impact.
Patania II, a 25-tonne seabed mining robot, is lowered into the Pacific Ocean to begin a descent to the sea floor, in the Clarion Clipperton Zone of the Pacific Ocean, April 2021. (photo credit: GSR/HANDOUT VIA REUTERS)ByREUTERSUpdated: