People living in the Pacific nation are divided on whether to push ahead with deep-sea mining for polymetallic nodules.

Oslo's plan to open up its Arctic seabed for mining prompted stark environmental opposition.

Greenpeace could be thrown out of the UN body overseeing deep-sea mining for obstructing a research expedition.

As deep-sea miners seek international go-ahead, opponents say the environmental impact is too high.

Environmental scientists have warned the practice could be devastating for marine life.

Is mining on the ocean floor getting closer to becoming a reality?

A prototype deep sea mining machine is lying stranded on the floor of the Pacific Ocean.