Greenpeace used a robot more than 2,300 metres below the ocean surface to unfurl a “Listen to the Science” banner in protest against deep-sea mining.

Greenpeace used a robot more than 2,300 metres below the ocean surface to unfurl a “Listen to the Science” banner in protest against deep-sea mining.

“By safeguarding these deep-sea ecosystems within a global network of ocean sanctuaries and establishing a moratorium on deep sea mining, we can create a resilient safety net for…