How International Treaties On The Deep Seabed Govern What Belongs To All Humanity

The phrase "common heritage of mankind" entered international law through Arvid Pardo, Malta's ambassador to the United Nations, in a 1967 speech to the General Assembly. Pardo argued that without a legal framework, the deep seabed would be colonized by technologically advanced nations, reproducing the land-grab dynamics that had defined previous centuries of imperialism.

His argument was simple: if the seabed belongs to no one, it belongs to everyone. And if it belongs to everyone, its governance must be collective.

The General Assembly responded in 1970 with Resolution 2749, declaring the seabed beyond national jurisdiction and its resources the common heritage of mankind. This principle was then incorporated into UNCLOS, which was opened for signature in 1982 and entered into force in 1994.

The principle has five components: 1. No sovereign appropriation. No nation can claim the international seabed as territory. 2. Shared management. Governance must be collective, through an international institution. 3. Shared benefits. Economic returns must be distributed equitably, with special consideration for developing nations. 4. Peaceful use. The area must be used exclusively for peaceful purposes. 5. Preservation for future generations. Current use must not compromise the resource base for those who come after.

These five principles, taken together, represent the most mature expression of collective resource governance in international law.

The ISA is the institutional embodiment of the common heritage principle. Key features:

Structure: An Assembly (all member states), a Council (36 members elected by the Assembly), and a Secretariat. The Council includes seats reserved for developing nations, land-locked nations, and major consumer states, ensuring diverse representation.

Mandate: To organize and control all mineral-related activities in the international seabed area, including issuing exploration and exploitation contracts, setting environmental standards, and managing benefit-sharing.

The Enterprise: UNCLOS envisioned an operational arm of the ISA called "the Enterprise" that would conduct mining directly on behalf of humanity. This arm was never fully operationalized due to resistance from industrialized nations during the 1994 Implementation Agreement, which scaled back the original vision in exchange for broader ratification.

Current status: As of 2024, the ISA has issued 31 exploration contracts to various state-sponsored entities and companies. No exploitation (actual mining) has been permitted yet, though several contractors are pushing for it. The regulatory framework for exploitation, called the Mining Code, has been under negotiation for years.

The deep seabed contains three primary resource types of economic interest:

Polymetallic nodules: Potato-sized rocks sitting on the abyssal plain, concentrated in the Clarion-Clipperton Zone of the Pacific Ocean. They contain manganese, nickel, cobalt, and copper, all critical for battery production. Estimated total resource: billions of tons.

Polymetallic sulfides: Formed around hydrothermal vents where superheated water meets cold seawater. Rich in copper, zinc, gold, and silver.

Cobalt-rich ferromanganese crusts: Coating seamounts at depths of 800-2,500 meters. Rich in cobalt, nickel, and rare earth elements.

The irony: these resources are critical for the "green transition." Electric vehicle batteries require cobalt, nickel, and manganese. The push toward renewable energy infrastructure is creating economic pressure to mine the one part of the planet we've legally declared belongs to everyone.

The common heritage framework is under threat from multiple directions:

The two-year rule: In 2021, Nauru triggered a provision in UNCLOS that gives the ISA two years to finalize mining regulations after a member state declares its intent to sponsor exploitation. This forced an artificial timeline on negotiations that many nations and environmental groups consider inadequate for developing proper environmental protections.

Corporate lobbying: Companies like The Metals Company (formerly DeepGreen) have invested hundreds of millions in deep-sea mining technology and are pressing for rapid regulatory approval. Their economic models depend on mining starting soon.

Environmental concerns: Deep-sea ecosystems are among the least understood on Earth. Polymetallic nodules take millions of years to form. The organisms that live on and around them are largely unstudied. The sediment plumes from mining would affect vast areas. Scientists have called for a moratorium, and over 30 countries have expressed support for a pause.

Equity failures: Despite the benefit-sharing mandate, the current exploration contracts are overwhelmingly held by entities sponsored by developed nations. The developing nations that the common heritage principle was designed to protect have limited technical capacity to participate. The promised equitable sharing has not materialized in practice.

U.S. non-ratification: The United States has never ratified UNCLOS, partly because of objections to the common heritage framework. This means the world's largest economy and military power sits outside the legal structure governing half the planet's surface.

The deep seabed framework, despite its imperfections, demonstrates several things:

Collective ownership is legally feasible. The framework exists. It's ratified. It has institutions, budgets, and enforcement mechanisms. The idea that "you can't collectively own anything at global scale" is empirically false.

The principle precedes the technology. The common heritage declaration was made before anyone could actually mine the deep seabed. The legal framework was established in anticipation of capability. This is the opposite of the typical pattern where exploitation happens and regulation follows.

The tension between principle and power is permanent. The framework has been under pressure since its creation. Industrialized nations weakened it during the 1994 Implementation Agreement. Corporate interests are weakening it further now. The principle has to be actively defended in every generation.

Extension is possible. The common heritage concept has been applied beyond the seabed. The 1967 Outer Space Treaty declares space and celestial bodies the "province of all mankind." The Antarctic Treaty System preserves Antarctica for scientific research and prohibits military activity. The concept can extend wherever we choose to apply it.

If every person agreed that certain resources belong to all of humanity:

The Mining Code would include genuine benefit-sharing. Not token payments, but meaningful revenue distribution that funds development in nations with no mining capacity.

Environmental precaution would be enforceable. A moratorium on exploitation until ecosystem impacts are understood would be politically achievable.

The principle would extend. Freshwater aquifers that cross national boundaries. The atmosphere's carbon absorption capacity. The electromagnetic spectrum. Genetic resources. The digital commons. Each of these is a candidate for common heritage governance.

The Enterprise would be operationalized. Instead of private companies mining on behalf of sponsoring states, a truly international entity would conduct operations on behalf of humanity, with profits distributed accordingly.

The U.S. would ratify UNCLOS. Bringing the world's most powerful nation into the framework that governs the world's largest shared resource.

The deep seabed is a test case. If we can govern half the planet's surface as shared inheritance, we can govern anything that way. If we can't, it reveals exactly where our commitment to shared humanity breaks down: at the point where someone stands to profit from breaking the deal.

1. The Ownership Question: Make a list of things you believe should belong to all of humanity collectively. Then make a list of things that should be privately ownable. Where's the line? What principle determines which list something belongs on?

2. The Nodule Problem: Research the Clarion-Clipperton Zone. What lives there? What would mining do to it? How do you weigh mineral needs for green technology against deep-sea ecosystem preservation?

3. The Benefit-Sharing Design: If deep-sea mining proceeds, design a benefit-sharing formula. How much goes to the mining company? How much to the sponsoring state? How much to the global fund? How is the global fund distributed?

4. The Extension Exercise: Pick one resource not currently governed by common heritage principles (freshwater, atmosphere, genetic data, electromagnetic spectrum). Draft a one-page argument for why it should be. What's the strongest objection?

5. The Power Audit: Who benefits from the current arrangement where the common heritage principle exists on paper but is weakly enforced? Who would lose if it were fully enforced? What does this tell you about the relationship between legal principles and actual power?