For most of modern history, the open ocean has been treated as a place apart. Beyond the 200-nautical-mile limits of national jurisdiction, it was governed by custom, fragmented rules, and the assumption that what lay far offshore was too vast to manage and too resilient to exhaust. That assumption has worn thin. Fishing fleets now range farther and stay out longer. Shipping lanes have thickened into highways. Interest in seabed minerals has grown. And the tools to extract value from the deep sea, including its genetic resources, have advanced faster than the institutions meant to oversee them.
On January 17th 2026, a new United Nations agreement—the Biodiversity Beyond National Jurisdiction accord, or BBNJ—entered into force. It is the first global framework aimed explicitly at conserving life in the waters and seabed beyond national borders. It creates a process for establishing protected areas on the high seas, requires environmental impact assessments for new activities, sets out rules for sharing benefits from marine genetic resources, and commits to capacity building and technology transfer. The details will take years to settle. The shift in legal posture is immediate.
The text is done. The hard part is turning it into practice.
That is not a dramatic statement. It is simply where most treaties succeed or fail. The high seas cover roughly 60% of the ocean and more than 40% of the planet’s surface, yet less than 1.5% is protected in any formal sense. Meanwhile fishing, shipping, bioprospecting, and exploratory mining have expanded there faster than the rules governing them. BBNJ tries to close that gap without replacing existing bodies. That design is pragmatic, but it also creates friction, since it must mesh with institutions that guard their mandates and regulate activities in slices.
The treaty’s promise rests on three hard tests. First, transparency. Environmental impact assessments have been inconsistent or absent on the high seas. Requiring disclosure, alongside a shared clearing-house mechanism, is a bet that shared information can narrow the space for harmful activities to proceed unnoticed. Second, protection. Even coastal marine protected areas often struggle to change behavior at sea. On the high seas, enforcement will be harder still, with scarce patrol capacity and strong incentives to cheat. Third, benefit-sharing. Developing countries have long argued that profits derived from genetic resources in the global commons should be shared. The treaty creates a framework, but leaves sensitive details for later, risking delay and dispute.
The hinge is capacity. Without durable support for poorer countries to participate, the system will be narrow and mistrusted. This is where technology matters. Satellite tracking, radar, and machine-learning tools can make illicit behavior harder to hide and easier to document. They do not replace enforcement, but they shift the odds.
BBNJ will not reverse decades of damage on its own. What it does do is alter the legal landscape of the open ocean. For the first time, biodiversity in the global commons is not an afterthought. Whether January 17th marks a turning point will depend on what follows: the strength of the rules that get written, the credibility of the data that gets shared, and the willingness of countries to treat the open ocean as something they are capable of governing, not simply using.
A longer version of this piece was published last week as a commentary on Mongabay.
