The High Seas Treaty

The BBNJ: The Agreement on the Conservation and Sustainable Use of Marine Biological Diversity of Areas beyond National Jurisdiction 

Formally the Agreement under the United Nations Convention on the Law of the Sea on the Conservation and Sustainable Use of Marine Biological Diversity of Areas Beyond National Jurisdiction, the BBNJ is a landmark international treaty often called the High Seas Treaty. Background and Status

• Adopted: June 19, 2023, after nearly two decades of discussions and intense negotiations.
• Entered into force: January 17, 2026, after reaching the 60-ratification threshold (it has since seen broader ratification and signatures, with around 145 signatories and over 85 parties as of recent counts).
• It serves as the third implementing agreement to the 1982 UNCLOS (United Nations Convention on the Law of the Sea), complementing existing frameworks for fisheries, shipping, and seabed mining without overriding them.

Areas Beyond National Jurisdiction (ABNJ) cover: two-thirds of the ocean (high seas water column + the international "Area" of the seabed). These regions represent the largest habitat on Earth but have long had governance gaps, especially for biodiversity protection amid threats like overfishing, pollution, climate change, and emerging activities (e.g., deep-sea mining, bioprospecting).Core ObjectiveTo ensure the conservation and sustainable use of marine biological diversity in ABNJ for present and future generations, through effective UNCLOS implementation and enhanced international cooperation. Four Main Pillars ("Packages")The agreement is structured around four interconnected themes:

1. Marine Genetic Resources (MGRs), Including Fair and Equitable Sharing of Benefits
   Regulates access to genetic material from high-seas organisms (e.g., for pharmaceuticals, cosmetics, or biotechnology) and their digital sequence information.
   Emphasizes benefit-sharing (monetary and non-monetary) to support developing states, including capacity-building and technology transfer. It promotes open access with transparency mechanisms while addressing equity.
2. Area-Based Management Tools (ABMTs), Including Marine Protected Areas (MPAs)
   Establishes a global framework for creating MPAs and other tools in the high seas.
   Decisions aim for science-based, inclusive processes (with COP approval). This is a major gap-filler, as prior high-seas protections were fragmented.
3. Environmental Impact Assessments (EIAs)
   Requires parties to assess potential impacts of planned activities in ABNJ (or activities under their jurisdiction that could affect ABNJ).
   Includes thresholds for significant harm, public reporting via a Clearing-House Mechanism, and consideration of cumulative effects. It promotes a precautionary approach.
4. Capacity-Building and Transfer of Marine Technology (CB&TMT)
   Focuses on helping developing states participate effectively, with obligations for technology transfer, training, and funding to reduce inequalities in ocean science and governance.

Key Institutional and Cross-Cutting Elements

• Conference of the Parties (COP): Main decision-making body.
• Scientific and Technical Body: Provides expert advice.
• Clearing-House Mechanism: Central hub for information sharing, transparency, and benefit-sharing data.
• Secretariat: Administrative support (location under discussion — bids from Xiamen/China, Valparaíso/Chile, and Brussels/Belgium; decision expected at COP1).
• Funding Mechanism: To support implementation, especially for developing countries.
• Principles include equity, precaution, ecosystem approach, and respect for UNCLOS rights (e.g., freedom of navigation, marine scientific research).

Geopolitical Context (Relevant to Your Blog)China's bid to host the Secretariat in Xiamen highlights the treaty's strategic importance. Hosting offers influence over agenda-setting, data management, and norm interpretation — especially as China positions itself as a leader in "Global South" multilateralism while navigating its own maritime interests (e.g., fishing fleets, South China Sea claims). The choice (to be finalized at COP1) could affect perceptions of neutrality, given ongoing disputes and the treaty's emphasis on the "common heritage of mankind." Strengths and Challenges

• Strengths: Fills critical UNCLOS gaps, promotes equity, enables high-seas MPAs, and sets standards for emerging activities. It encourages coordination across sectors.
• Challenges: Implementation details (e.g., exact benefit-sharing formulas, MPA proposal/voting thresholds) will evolve at COP meetings. It respects existing bodies (e.g., no direct override of fisheries or mining regimes), which can limit ambition. Enforcement relies on state compliance and cooperation.

The BBNJ Agreement represents a significant step toward treating the high seas as a shared global commons rather than a lawless frontier. Its success will depend on rapid ratification, robust COP decisions, and actual funding/technology flows. For deeper reading, the official UN text and High Seas Alliance briefings are excellent resources.

Controlling the oceans: China's ambition

 

The Battle for the BBNJ Secretariat

Negotiations for the BBNJ Agreement (Biodiversity Beyond National Jurisdiction) are intensifying ahead of the 2027 Conference of the Parties (COP1). A central conflict has emerged over which city will host the new Secretariat. The three contenders are Valparaíso (Chile), Brussels (Belgium), and Xiamen (China).

China’s Xiamen Bid:

• The Offer: China has proposed a lavish "one-stop" package, including a 15-story office complex free of charge and significant financial aid to ensure Global South participation.

• Strategic Motivation: China seeks to rectify a "geographical imbalance," noting that no major UN ocean governance body is currently headquartered in the Asia-Pacific.

• The "Responsible Power" Narrative: By bidding just as the U.S. (under the Trump administration) withdraws from various international organizations, China is positioning itself as the new anchor of multilateralism and a leader of the Global South.

• Institutional Expertise: Hosting would provide Beijing a "front-row seat" in shaping the rules for high-seas resources, a sector where it was historically a latecomer.

Decision Factors:

The choice depends on whether the Secretariat becomes a fully independent UN body or an "institutionally linked" agency (favouring Brussels), and how member states weigh China's generous funding against geopolitical concerns regarding its maritime disputes and growing influence.

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Commentary: Beijing’s Maritime Manifest Destiny

China’s bid for the BBNJ Secretariat is far more than a bureaucratic application; it is a calculated move to secure normative power over the world’s final frontier: the high seas.

1. Filling the Vacuum of Leadership

Beijing’s timing is surgical. By stepping up exactly as the United States retreats into isolationism, China is performing a "prestige pivot." It is transitioning from a country that merely follows international maritime law to one that houses the house where those laws are managed. This "hosting diplomacy" allows China to frame itself as the adult in the room, contrasting its stability with American volatility.

2. Institutionalizing "Blue Territory" Ambitions

For decades, China has felt hamstrung by a UN ocean architecture (IMO, ITLOS, ISA) designed and dominated by Western powers. By pushing for Xiamen, Beijing is attempting to relocate the "gravitational centre" of ocean governance to its own shores. This isn't just about administrative jobs; it’s about institutional capture. Hosting the Secretariat provides unparalleled access to data, personnel, and the subtle "soft power" required to influence how the "common heritage of mankind" is defined—and exploited.

3. The Global South as a Geopolitical Shield

China’s emphasis on "representativeness" and "capacity building" for developing nations is a brilliant use of the Global South as a geopolitical shield. By tying the Secretariat's success to Chinese funding for poorer nations, Beijing makes it politically difficult for Western nations to oppose the bid without appearing "anti-development."

4. The Irony of the Host

The most significant tension remains China’s own maritime record. Beijing is asking the world to trust it as the custodian of high-seas biodiversity while it simultaneously maintains the world's largest distant-water fishing fleet and continues to assert expansive, contested claims in the South China Sea.

Conclusion

China's ambition is to be simultaneously a maritime power and a maritime regulator. If Xiamen wins, it will signal a fundamental shift in the global order: one where the rules of the ocean are no longer written in the Atlantic, but in the Pacific, under the watchful eye of a resurgent Beijing.