Common Heritage of Mankind (Seabed Rents)

Overview

The common heritage of mankind is the legal principle, first proposed by Maltese diplomat Arvid Pardo to the UN General Assembly in 1967 and formalized in the 1970 Declaration of Principles Governing the Seabed, that mineral resources of the deep seabed beyond any nation's jurisdiction belong to humanity as a whole rather than to whichever state or company reaches them first.[1] The principle was written into Part XI of the 1982 UN Convention on the Law of the Sea (UNCLOS), whose Article 136 declares "the Area and its resources are the common heritage of mankind," and it created the International Seabed Authority (ISA) to administer exploration and future extraction, with proceeds to be shared among all states — with particular attention to developing and landlocked countries.[2] Fred Harrison's Boom Bust cites D. R. Denman's Markets Under the Sea? (1984) on the UN convention's designation of seabed mineral rents for the benefit of mankind, treating it as a real-world instance of rent being assigned to common ownership rather than to whoever claims it first (Ch. 9 §3).[3]

Georgists have noted the resemblance between this principle and the land-rent case — a resource nobody produced, whose value should not simply accrue to whoever claims it — but the seabed regime illustrates how much more contested this application is than land value taxation. Major industrial states, led by the United States, refused to ratify Part XI as originally written, objecting to its wealth-sharing and technology-transfer terms; a 1994 Implementation Agreement diluted those provisions to secure wider participation, and the US still has not ratified UNCLOS.[2] As of mid-2026 the ISA had not finalized a mining code or approved any commercial seabed mining, and in April 2025 the United States moved to bypass the ISA framework, issuing an executive order directing permits for deep-seabed mining under a dormant 1980 domestic law — a unilateral step the ISA's Secretary-General said no state has the right to take outside UNCLOS.[4] The episode is a live illustration of how far rent-as-common-property remains from settled practice once the resource in question is not land.

See Also

• Land as Commons — the Georgist tradition holding land is a common inheritance whose rent belongs to all, the analogy this seabed principle extends
• Resource Rents — the broader category of natural-resource rent capture this principle is a case of
• Alaska Permanent Fund — a working example of resource-rent-as-common-property at the state level, unlike the still-unrealized seabed regime
• Boom Bust (Harrison, 2005) — the discovery source citing the UN seabed convention

Sources

1. Wikipedia, "Common heritage of humanity" — used for Arvid Pardo's 1967 proposal and the 1970 UN Declaration of Principles Governing the Seabed. Common heritage of humanity
2. United Nations, "The International Seabed Authority and Deep Seabed Mining," UN Chronicle — used for UNCLOS Article 136, the ISA's mandate, and the 1994 Implementation Agreement diluting Part XI. UN Chronicle
3. Fred Harrison, Boom Bust: House Prices, Banking and the Depression of 2010 (2005/2010), Ch. 9 §3, citing D. R. Denman, Markets Under the Sea? (1984) — discovery source. wiki summary
4. Inside Climate News, "Trump's New Executive Order Promotes Deep Sea Mining in US and International Waters While Bypassing International Law" (May 18, 2025) — used for the 2025 US executive order and the ISA's response. Inside Climate News