Latest News

Study shows deep sea mining still has a lasting impact on the environment forty years after it began

Scientists said that a strip of Pacific Ocean seabed, which was mined more than 40 year ago for metals, has not recovered. This adds weight to the calls for a ban on all deep-sea mining during this week's U.N. led talks.

Scientists from the National Oceanography Centre in Britain led a 2023 expedition by a team to the mineral rich Clarion Clipperton Zone. They found that the effects of a 1979 mining test experiment are still felt on the seafloor. This complex ecosystem hosts hundreds of species.

According to a study published in Nature Journal, the collection of "polymetallic" nodules from an 8-metre strip on the seabed has caused long-term changes in sediment and decreased the population of many larger organisms. However, some smaller, mobile creatures have recovered.

Daniel Jones, expedition leader for the NOC, said that this study was crucial to understanding long-term effects. "Although some areas showed little or no recovery in some cases, we did see some animal groups showing the first signs recolonisation."

This week, delegates from 36 countries will be attending the International Seabed Authority's council meeting in Kingston, Jamaica to determine whether mining companies can extract metals such as copper or cobalt on the ocean floor.

Environmental groups are calling for a stop to mining as they consider hundreds of amendments to the 256-page draft code. This is a call that has been backed by 32 governments, 63 large financial institutions and companies, and also 63 large corporations.

Greenpeace activist Louise Casson said, "This new evidence shows that governments must act immediately to stop deep-sea mining before it starts."

The Metals Company, a Canadian company, plans to submit its first official mining application in June.

Delegates will discuss on Friday what should be done if a mine application is submitted before all regulations are complete.

TMC stated at a briefing held last week that they had the legal right to make a request at any time. They hoped the ISA will bring clarity to the process.

TMC claims that the environmental impact of mining in deep water is much smaller than terrestrial mining.

Craig Shesky said that TMC's Chief Financial Officer, "You have to move less material in order to get the same quantity of metal. Higher grade means better economics but also lower environmental impacts."

(source: Reuters)