The deep sea, Earth’s last untouched ecological frontier, is an ancient, living system that regulates our climate, stores carbon, and hosts breathtaking biodiversity. It is the common heritage of all of us. It is not a resource bank for speculative profits. And it is not for sale.
Yet, the deep-sea mining industry, led by The Metals Company (TMC), is determined to change that. The company has threatened to submit the world’s first commercial mining application in June 2025—with or without regulations in place. And now, in a desperate new move, it says it will bypass the International Seabed Authority (ISA) altogether and seek mining permits under the United States’ 1980 Deep Seabed Hard Mineral Resources Act (DSHRMA).
TMC’s reckless and dangerous attempt at a deep-sea neocolonial land grab came on the penultimate day of the ISA’s 30th Council session, ahead of a discussion of its mining application and a Fourth Quarter 2024 Earnings Update call. As it became clear that it would be forced to leave the meeting empty-handed, when nations rejected its wish to secure a process to have its commercial application approved, the company doubled down. Its tactics echo those of the oil and gas industry—manufacturing urgency and demanding fast-tracked approval.
The truth is this: deep-sea mining is a “cause in search of a purpose.” Greed, driven by speculative profit rather than public need, is driving the push for the launch of this destructive industry.
Member states and the ISA’s newly appointed Secretary-General Leticia Carvalho swiftly condemned it as a blatant attempt to sidestep international law and undermine the multilateral governance of the global commons. This pressure from TMC and other industry players forces a defining question for the ISA: Will it uphold its mandate to protect the seabed for the benefit of all humankind, or will it cave to corporate pressure?
Contrary to industry complaints, the careful ISA deliberations that have taken place over the years are safeguards to ensure that crucial unresolved questions around environmental risk, equity, science, and underwater cultural heritage are addressed. Notably, in this session, the African Group spotlighted long-ignored issues of how benefits will be shared and the socioeconomic impacts of seabed mining on terrestrial mining countries. These questions cut to the core of justice and global balance, and they demand answers before any approval can be considered.
Outside the meeting rooms, public opposition is mounting. Greenpeace International and Pacific allies brought the voices of over 11,000 people from 91 countries directly to the ISA urging deep-sea conservation. Thirty-two countries now support a moratorium, ban, or precautionary pause on deep-sea mining. The United Nations Environment Program has echoed these calls, emphasizing the need for robust, independent science before any decisions are made. And legal scholars have dismissed recent threats of lawsuits from contractors as baseless.
The industry is increasingly being recognized for what it is—a false solution. Deep-sea mining proponents claim that mining the seabed would reduce pressure on land-based ecosystems. However, research suggests deep-sea mining is more likely to add to global extraction than replace it. Meanwhile, emerging battery technologies, recycling breakthroughs, and circular economy models are rapidly reducing any purported demand for virgin metals from the seafloor.
With its original green-washing narrative unraveling, TMC and others are now stoking geopolitical tensions, positioning themselves as a strategic necessity for national security. However, the cracks are showing. For instance, TMC recently surrendered a third of its mining contract area in the Clarion-Clipperton Zone (CCZ), after ending a services agreement with its Kiribati-sponsored partner, Marawa. The industry faces failed mining tests, equipment and vessel delays, no finalized regulations, and growing investor skepticism over the industry’s environmental and financial viability.
The truth is this: deep-sea mining is a “cause in search of a purpose.” Greed, driven by speculative profit rather than public need, is driving the push for the launch of this destructive industry.
And the risks are profound. A recent study published in Nature found reduced biodiversity and ecosystem degradation more than 40 years after a small-scale mining test. Recovery of these nodules, which take millions of years to form, in human timescales is impossible.
But there is still hope. The recent appointment of Leticia Carvalho, a scientist who is calling for transparency, inclusivity, sustainability, environmental protection, and science-driven governance, as the secretary-general of the ISA presents a real opportunity. The multilateral body, recently decried for its seemingly pro-industry stance, should seize it and reorient itself back toward its most weighty purpose: protecting the seabed for the benefit of humankind as a whole.
The ISA’s dual mandate under the United Nations Convention on the Law of the Sea (UNCLOS)—to both manage the mineral resources of the seabed and ensure the effective protection of the marine environment—has always been fraught with tension. But in this era of climate chaos, biodiversity loss, and ocean degradation, it is precaution and protection that must prevail. The health of the ocean, the rights of future generations, and the principle of the common heritage of humankind demand it.
As the world heads toward the U.N. ocean conference in Nice, France this June—just a few weeks before the July ISA Assembly—leaders will have a crucial chance to show where they stand. They must reject TMC’s and the rest of the deep-sea mining industry’s attempts to force the ocean floor to be opened for exploitation with no assurance of marine protection. They must not allow themselves to be bullied into the adoption of a weak Mining Code built on industry-favored timelines. They must honor their roles as stewards—not sellers—of the international seabed.
The deep sea is not for sale—and the ISA still has a chance to prove it.
