WHAT IS DEEP SEA MINING?
Deep sea mining is an industry on the cusp of being given the go-ahead [1]. Mining companies want to lower tank-like machines up to four kilometres down to the ocean floor, to scrape up tennis ball-sized rocky nodules that contain minerals like copper, nickel and cobalt. These “polymetallic” nodules take millions of years to grow, are home for infants of species like ghost octopuses, and according to a recent
study, appear to be producing oxygen in total darkness [2], making them a vital part of the marine environment.
We know more about the surface of the Moon than the bottom of the oceans. In fact, almost every time research vessels explore the deep sea, they discover multiple new lifeforms. The mining machines will destroy all in their path, as well as throw up sediment plumes and noise pollution that could travel for miles. This risks masking calls between whales and their young and disrupting mating partners.
And we’re not talking about a tiny patch of seabed that companies want to mine. Oh no. A vast area of the Pacific called the Clarion-Clipperton Zone has been divided into 17 mining claims, spanning approximately 1 million square kilometres – that’s an area the size of the UK, France and Italy combined!