Calls for Moratorium Grow as Deep-Seabed Mining Threat Looms

Stakeholders worldwide urge a pause to safeguard deep-sea ecosystems from irreversible harm

Navigate to:

Calls for Moratorium Grow as Deep-Seabed Mining Threat Looms
A small crustacean swims against a dark background.
A crustacean called a hyperiid swims in the North Atlantic Ocean, where ecosystems at depths of 4,500 meters (nearly 15,000 feet) thrive. The deep seas throughout the world have attracted the interest of seabed mining proponents as potential sites for mineral extraction despite gaps in knowledge of sea life and no rules to govern such activity.

The deep sea provides a huge reservoir of biodiversity and helps to regulate the earth’s climate in ways scientists are only beginning to understand. Despite researchers’ limited knowledge of the deep sea’s intricacies, the vast majority of scientific advice warns of the potential for deep-seabed mining to inflict irreversible damage on this sensitive ecosystem.

For two weeks in March, the International Seabed Authority (ISA) Council, the executive arm of the U.N.-mandated body tasked with overseeing deep-sea mining activities in international waters, met to continue negotiations on deep-seabed mining regulations.

A paper published just prior to the March meeting found more than 30 major gaps in the ISA’s draft regulations. These include defining what levels of environmental harm from deep-sea mining are permissible (if any), the necessary scientific information and thresholds needed to ensure such harmful levels are not reached, and the establishment of institutional structures and systems to ensure compliance and enforcement of the eventual regulations. After the meeting, despite two weeks of intensive negotiations, these gaps remain, and it is unrealistic to expect them to be resolved in the near future.

Meanwhile, the ISA is under pressure from a prospective mining company that plans to put forward an application for mineral extraction later this year. Due to a legal loophole in the United Nations Convention on the Law of the Sea, this application can now be considered and provisionally approved even though regulations are not yet in place.

It would be irresponsible for the ISA to approve this application without sufficient scientific knowledge to ensure that deep-seabed mining will not cause unacceptable and irreversible consequences to vital Earth systems with global impacts for generations to come. It’s also reckless to consider commercial mining – an industry that will work hundreds to thousands of miles offshore and miles below the ocean surface – when regulations and institutional frameworks to govern it remain very far from complete.

Countries are at a critical juncture, but they don’t have to settle for the lesser of two evils: unregulated mining or inadequate regulations. Instead, it’s time for the ISA to listen to the chorus of countries – recently joined by the Kingdom of Denmark – Indigenous groups, international organizations, companies, scientists and NGOs calling for a moratorium on deep-seabed mining.

Countries will continue negotiations when they reconvene in July, when both the Council and the ISA’s supreme organ, the ISA Assembly, gather. This meeting presents a prime moment for the ISA to listen and provide the time needed to research and sufficiently understand the impacts from deep-seabed mining before considering its approval. Let’s learn from past mistakes and seize this rare opportunity before the start of a new industrial scale activity. The ocean is crucial to keeping the planet healthy – yet it’s under huge strain from climate change and other human damage. The ISA must enact a moratorium to avoid yet another strain on the world’s ocean.

Julian Jackson is a project director and Chris Pickens is a principal associate with The Pew Charitable Trusts’ ocean governance project.

National Homeownership Month


37 Researchers Working to Transform Biomedical Science

Quick View

Biomedical researchers are on the front lines of scientific innovation. From responding to global pandemics to pioneering lifesaving cancer treatments, these researchers push past scientific boundaries to solve pressing health challenges. For nearly 40 years, The Pew Charitable Trusts has supported more than 1,000 early-career biomedical scientists committed to this discovery.

Composite image of modern city network communication concept

Learn the Basics of Broadband from Our Limited Series

Sign up for our four-week email course on Broadband Basics

Quick View

How does broadband internet reach our homes, phones, and tablets? What kind of infrastructure connects us all together? What are the major barriers to broadband access for American communities?

Pills illustration
Pills illustration

What Is Antibiotic Resistance—and How Can We Fight It?

Sign up for our four-week email series The Race Against Resistance.

Quick View

Antibiotic-resistant bacteria, also known as “superbugs,” are a major threat to modern medicine. But how does resistance work, and what can we do to slow the spread? Read personal stories, expert accounts, and more for the answers to those questions in our four-week email series: Slowing Superbugs.