The Pacific Floor Is Not a Sacrifice Zone: Deep-Sea Mining's Regulatory Crisis
Somewhere between 4,000 and 6,000 metres below the surface of the central Pacific Ocean, on abyssal plains that have been in darkness for longer than multicellular life has existed on this planet, sit approximately 21 billion tonnes of polymetallic nodules. Manganese, cobalt, nickel, copper — the minerals that the green energy transition requires in quantities that current land-based mining cannot supply. The Clarion-Clipperton Zone, straddling international waters between Hawaii and Mexico and overlapping with the exclusive economic zones of Kiribati, the Cook Islands, and several other Pacific states, is the most intensively explored and contested of these deposits. And the institution created to govern their extraction — the International Seabed Authority, established under the 1994 implementing agreement to the UN Convention on the Law of the Sea — is in the middle of a governance crisis that reveals, with uncomfortable clarity, how quickly the "common heritage of mankind" language dissolves when significant mineral wealth is actually at stake.
Joeli Veitayaki's ocean governance research and the broader Pacific studies tradition articulated by Epeli Hauʻofa — who insisted on the Pacific Ocean as the foundational identity of its peoples, not a resource to be carved into extraction zones by external powers — provide the analytical frame that mainstream coverage of deep-sea mining almost never applies. This is not an abstract regulatory dispute. It is a question of who owns the deep ocean and on whose terms it is opened.
The Nauru Trigger and the Two-Year Rule
In June 2021, Nauru — acting as the sponsoring state for The Metals Company's Pacific subsidiary Nauru Ocean Resources Inc. — invoked Section 15 of Annex II of the 1994 UNCLOS implementing agreement. This provision, known as the "two-year rule," requires the ISA to finalise a Mining Code within two years of such a notification or provisionally allow the sponsoring state's contractor to proceed under existing ISA guidelines. The intent of the rule, drafted in the early 1990s, was to prevent the Authority from indefinitely deferring commercial exploitation. Its application by Nauru — one of the world's smallest and most indebted states, heavily dependent on the revenue promised by The Metals Company — was a calculated use of procedural leverage that threw the ISA into a crisis it had not anticipated.
The two-year deadline expired in July 2023. The ISA's Mining Code remained unfinished. The Council — the ISA's executive body — voted not to approve The Metals Company's application to proceed, effectively calling Nauru's bluff, but the underlying regulatory vacuum remained. A second application cycle began, ISA negotiations continued, and the deep-sea mining industry entered a period of legal uncertainty that has depressed investment while doing nothing to resolve the ecological questions that make investment reckless.
What the Science Actually Says
Marine scientists have been more consistent than regulators on the ecological risk. The abyssal plain ecosystems of the Clarion-Clipperton Zone support extraordinary biodiversity — species densities that contradict the early assumption that the deep ocean was a biological desert. Sediment plumes generated by nodule collection vehicles can travel hundreds of kilometres, smothering filter feeders and disrupting food webs across areas many times larger than the extraction footprint. Recovery timelines for disturbed abyssal communities are measured in centuries; a 1989 experimental disturbance site in the CCZ showed minimal biological recovery after thirty years of monitoring.
The ISA's environmental standards, currently being negotiated as part of the Mining Code, have been criticised by the International Union for Conservation of Nature, by scientific bodies including the Deep-Ocean Stewardship Initiative, and by the governments of France, Germany, Chile, New Zealand, and Fiji — all of which have called for a moratorium or precautionary pause pending greater scientific understanding. France and Germany's positions are particularly significant as major ISA member states with both the scientific capacity and the economic interest to assess these questions independently.
The Cook Islands, whose exclusive economic zone overlaps with some of the most nodule-rich areas of the Manahiki Plateau, has taken a notably different position from its Pacific neighbours. The Cook Islands Seabed Minerals Authority has issued exploration licences and is developing a domestic regulatory framework explicitly designed to enable exploitation, arguing that the revenue potential is too large for a small Pacific state to forgo on precautionary grounds. Joeli Veitayaki has engaged critically with this position, noting that the precautionary principle under UNCLOS Article 145 places the burden of proof on those asserting that exploitation can proceed safely, not on those calling for caution.
Regulatory Capture and the ISA's Structural Problem
The ISA's structural problem is one that Greg Fry's framework of Pacific institutional analysis illuminates clearly: the Authority is simultaneously the regulator of deep-sea mining and the body obligated to promote it. The 1982 UNCLOS text and the 1994 implementing agreement both charge the Authority with ensuring that exploitation occurs for the benefit of mankind as a whole — but also with administering the commercial development of the Area. When commercial interests and environmental protection conflict, the Authority has no clear mandate to prioritise one over the other, and its secretariat has historically leaned toward enabling industry over restraining it.
The composition of the ISA Council — thirty-six member states selected in a formula that includes seats for major industrialised states, major developing states, major importers of the minerals to be extracted, and sponsoring states of current contractors — means that the body charged with environmental oversight includes states with direct financial stakes in commercial exploitation. This is not a flaw in implementation. It is a flaw in design that UNCLOS's architects accepted in order to secure the participation of major maritime powers in the Convention.
Teresia Teaiwa's broader argument about Pacific sovereignty being treated as a resource for external exploitation rather than an end in itself applies with particular force here. Pacific states sponsor some deep-sea mining contractors (Nauru, Tonga, Kiribati); others call for moratoria (Fiji, Vanuatu, Samoa). The Forum has not reached consensus. The international governance architecture does not require it to. And the abyssal plain waits.
The Transition Metals Trap
The green energy transition creates a genuine dilemma that opponents of deep-sea mining cannot sidestep. Cobalt, nickel, and manganese in the volumes required for battery storage and electric vehicle manufacturing are concentrated in deposits — the Democratic Republic of Congo for cobalt, Indonesia for nickel, South Africa and Australia for manganese — that each carry their own profound environmental and human rights costs. Deep-sea nodules contain these minerals in polymetallic concentrations with no overburden (the nodules lie on the seafloor surface) and no human communities above them, which has led proponents to argue that, managed carefully, they represent a lower-impact extraction pathway than terrestrial alternatives.
Francis Hezel's perspective on Micronesian resource governance — that communities must hold genuine decision-making power over the resources in their geographic sphere, not merely receive compensation for decisions made by external actors — points toward the governance gap that makes the green transition argument insufficient. Pacific states whose EEZs border the CCZ have not been given genuine decision-making authority over the ISA's regulatory process. They are stakeholders in an institution they cannot control, watching a decision about their ocean that will be made largely by states whose coastlines are nowhere near the Pacific abyssal plain.
Where industry coverage frames deep-sea mining as an environmental trade-off calculation, Monexus frames it as a governance failure — the common heritage principle hollowed out by the same institutional dynamics that produce every other asymmetric resource extraction story in the Global South.