The Legal Nature of the International Seabed Area

Abstract

The legal nature of the "Area" defined as the seabed and ocean floor beyond national jurisdiction represents a pivotal issue in international maritime law. Following World War II, industrial and technological advancements highlighted the vast mineral wealth in deep-sea environments, triggering competing sovereign claims and legal uncertainty. Historically, legal scholars debated two traditional Roman law concepts: "res nullius," which views the seabed as ownerless property subject to appropriation through occupation, and "res communis," which treats it as common property open to free exploration by all capable states. However, both frameworks risked creating inequality and overexploitation. In 1967, Arvid Pardo introduced the transformative "Common Heritage of Mankind" (CHM) doctrine, advocating for peaceful use, international management, and equitable benefit-sharing, particularly for developing nations. Although the 1982 United Nations Convention on the Law of the Sea (UNCLOS) formally adopted CHM in Article 136, the subsequent 1994 Agreement introduced market-oriented concessions to ensure the participation of industrialized powers. These modifications shifted the regime toward a commercial logic, potentially diluting the original humanitarian essence of the CHM principle. This paper examines the evolution of these theories, analyzes the legal framework under UNCLOS, and evaluates the current challenges in actualizing the Area’s status as a shared global resource.