THE DEEP BRIEF · ISSUE 06
The World Ocean Assessment and the Limits of Evidence Without Obligation
“Is it of the very essence of truth to be impotent?”
— Hannah Arendt, Truth and Politics (1967)
When Knowledge Outpaces Governance
On 8 June 2026, the United Nations released the Third World Ocean Assessment. The timing was deliberate. World Oceans Day was chosen as the moment to present an assessment documenting what the Secretary-General described more starkly: an ocean “in deep trouble” and being pushed past its limits — driven by climate change, overfishing, biodiversity loss, and marine pollution — to the widest possible audience.
WOA III is the product of several hundred experts from 86 countries, working over several years to synthesise the most comprehensive integrated picture of the ocean yet assembled under United Nations auspices. It is the only global assessment to cover the environmental, economic, and social dimensions of the marine environment simultaneously. Its findings are unambiguous: ocean warming, acidification, biodiversity loss, and habitat degradation are intensifying across the global ocean, although their extent and severity vary considerably between regions. The assessment warns that ocean ecosystems and habitats are approaching—and in some cases may already have surpassed—critical tipping points.
And yet the question that WOA III cannot answer — that no assessment process can answer by design — is the one that matters most: what happens next?
This issue of The Deep Brief examines not what the World Ocean Assessments have found, but what they are structurally permitted to do with what they find. The answer to that question illuminates something fundamental about the architecture of contemporary ocean governance — and about the relationship between scientific consensus and legal obligation that sits at its centre.
Modern multilateralism has become extraordinarily effective at generating authoritative scientific knowledge. It has become comparatively less effective at constructing institutions capable of converting that knowledge into coherent governance. Evidence has become increasingly integrated while authority remains institutionally fragmented. Scientific understanding has advanced more rapidly than the institutional architecture through which governments collectively respond to it.
This asymmetry is not unique to ocean governance. Similar patterns are increasingly visible across climate policy, biodiversity conservation, global health and emerging technologies. Ocean governance nevertheless provides one of the clearest illustrations because the scientific evidence has become progressively more
comprehensive while the institutional landscape responsible for acting upon that evidence remains distributed across multiple legal regimes, specialised organisations and negotiating processes.
The World Ocean Assessment occupies an unusual institutional position within this landscape. It is neither a treaty nor a regulatory institution. It possesses no enforcement powers and creates no legal obligations. It cannot compel governments to alter policy, nor require international organisations to modify existing practice. Its authority derives entirely from the quality, breadth and credibility of the scientific knowledge it assembles.
The challenge confronting ocean governance is no longer principally one of information. Three successive World Ocean Assessments have demonstrated that the international community is capable of producing remarkably sophisticated, integrated and authoritative knowledge about the marine environment. The more difficult challenge concerns institutional translation. How does scientific authority become political authority? How does political agreement become legal obligation? And how does legal obligation become administrative practice across a governance system characterised by overlapping mandates, specialised institutions and competing national interests?
These questions sit at the centre of contemporary ocean governance. They also reveal that the distance between knowledge and action is rarely scientific. More often, it is institutional.
The Regular Process and the Institutional Position of Science
The World Ocean Assessment is the principal output of the Regular Process for Global Reporting and Assessment of the State of the Marine Environment, including Socio-economic Aspects, initiated through a series of General Assembly decisions beginning in the early 2000s and subsequently operationalised through later resolutions. Its title is technical. What it reveals about international governance is not.
The Regular Process was created in recognition of a simple institutional reality: governments cannot govern what they cannot collectively understand. By the beginning of the twenty-first century, scientific knowledge concerning the marine environment had become increasingly sophisticated, yet it remained dispersed across specialised organisations, academic institutions, regional bodies and sector-specific processes. Ocean governance had no equivalent of a comprehensive, integrated assessment capable of providing Member States with a common evidentiary foundation.
The Regular Process was designed to fill that gap.
Since its establishment, it has produced three assessments. WOA I, published in 2016, established the first integrated global baseline under United Nations auspices. WOA II, published in 2021, updated that assessment, confirming that many of the trends identified five years earlier had intensified. WOA III, released in 2026, significantly expands both the scientific evidence and the institutional analysis supporting it, introducing for the first time a dedicated examination of governance alongside environmental change.
The architecture underpinning the Regular Process is both deliberate and carefully constrained. Its purpose is not to govern the ocean. Its purpose is to inform those institutions responsible for doing so.
The distinction matters because international governance rests upon different forms of authority, each deriving its legitimacy from different foundational sources. Scientific authority establishes what the
available evidence demonstrates. Political authority reflects the negotiated preferences of sovereign governments. Legal authority defines what international law requires. Administrative authority determines what institutions possess the competence to implement. These forms of authority intersect continually, but they are neither identical nor interchangeable.
The World Ocean Assessment operates entirely within the first of these domains. Its conclusions command authority because they emerge through rigorous scientific assessment, extensive peer review and intergovernmental scrutiny. That authority is epistemic rather than juridical. It establishes credibility, not obligation.
This limitation is frequently misunderstood as institutional weakness. It is better understood as institutional design. Scientific assessment processes derive much of their legitimacy from procedures designed to preserve analytical independence and evidentiary rigour, even while operating within intergovernmental settings. Their authority depends upon being trusted as impartial producers of knowledge rather than participants in policy negotiation.
The institutional trade-off is unavoidable. The same institutional independence that protects scientific credibility inevitably limits political authority. Scientific assessments acquire legitimacy by remaining outside the decision-making processes whose outcomes they seek to inform. They become authoritative sources of knowledge precisely because they do not themselves determine public policy.
Understanding this institutional settlement is essential to understanding WOA III. The assessment was never intended to compel action. It was intended to ensure that when governments exercise judgement, they do so with the best integrated scientific evidence available. Its success should therefore be measured not by the number of legal obligations it creates, but by the quality of the evidentiary foundation it provides.
The governance question raised by WOA III is not whether the assessment has fulfilled its mandate. It clearly has. The more searching question is whether the wider institutional architecture surrounding it has evolved at the same pace as the scientific knowledge it now produces.
Three Assessments, One Institutional Trajectory
Viewed individually, each World Ocean Assessment documents the changing condition of the marine environment. Viewed collectively, they reveal something equally important about the evolution of international governance itself.
WOA I was fundamentally diagnostic. Its achievement lay in demonstrating that the condition of the global ocean could be assessed through a genuinely integrated framework that combined environmental, economic and social dimensions. Rather than treating pollution, fisheries, biodiversity, climate change and maritime industries as isolated policy sectors, it recognised the ocean as a single interconnected system. Its principal contribution was therefore institutional as much as scientific. It established a common analytical language through which governments could discuss ocean condition across previously fragmented disciplines.
WOA II confirmed that this integrated approach had become indispensable. The available datasets expanded and confidence strengthened in a number of key trends, even as significant regional and thematic knowledge gaps remained. Some ecosystems demonstrated resilience and instances of recovery. The broader trajectory, however, remained consistent. Ocean warming intensified. Acidification progressed. Biodiversity loss continued across multiple regions.
Human pressures increasingly interacted rather than operated independently.
By the publication of WOA III, the institutional challenge had subtly changed. The international community was no longer asking whether sufficient evidence existed to understand the direction of change. That threshold had already been crossed. Instead, the more difficult question had become whether progressively stronger scientific consensus was producing a corresponding evolution in governance.
The answer suggested by the three assessments is more complicated than either optimism or pessimism allows. Scientific understanding has evolved rapidly. Institutional architecture has evolved incrementally. That distinction is significant because it reveals an emerging asymmetry within contemporary international governance. The production of integrated knowledge has accelerated. The integration of authority has not.
This is perhaps the most important story told collectively by the World Ocean Assessments. It is not simply that the science has become more comprehensive. It is that each successive assessment has strengthened the evidentiary foundation available to governments while leaving almost unchanged the institutional position from which that evidence enters the wider governance system. Knowledge has become progressively more authoritative. Its institutional status has remained remarkably constant.
The Comparison That Matters
Comparisons between the World Ocean Assessment and the Intergovernmental Panel on Climate Change (IPCC) are both inevitable and, if handled carelessly, misleading. Both are intergovernmental scientific assessment mechanisms. Both synthesise large bodies of peer-reviewed research through rigorous review procedures. Both seek to provide governments with an authoritative understanding of complex planetary systems. Neither possesses the legal authority to compel states to act.
The more revealing comparison, however, lies not in the assessment bodies themselves but in the institutional environments within which they operate.
The influence of the IPCC derives less from the Panel alone than from the gradual evolution of the institutions surrounding it. Over three decades, climate governance has developed an increasingly sophisticated relationship between scientific assessment and political decision-making. The United Nations Framework Convention on Climate Change, the Kyoto Protocol and, most significantly, the Paris Agreement have progressively created institutional arrangements through which scientific findings provide the common evidentiary foundation for negotiated commitments. Scientific authority has not replaced political authority. Political authority has gradually become organised around scientific authority.
Ocean governance has yet to experience a comparable institutional evolution. UNCLOS remains the foundational legal framework governing the oceans, and rightly continues to be described as the constitution of the oceans. Few international agreements have demonstrated comparable durability or breadth. Yet institutional durability should not be confused with institutional adaptability. The Convention emerged from negotiations conducted during the 1970s and early 1980s, reflecting the scientific understanding, political priorities and institutional imagination of that period. UNCLOS does not establish a single ocean-wide mechanism through which evolving scientific consensus is systematically translated into coordinated changes across the wider governance architecture.
The consequence is an increasingly visible divergence. Ocean science has become progressively more integrated. Ocean governance remains institutionally specialised. The difficulty emerges when scientific understanding increasingly describes the ocean as a single interconnected system while legal authority remains distributed across institutions designed to optimise individual sectors. Integrated knowledge enters a governance architecture constructed around specialised mandates. The scientific diagnosis becomes progressively holistic. The governance response remains necessarily partial.
The consequence is neither institutional failure nor political indifference. It is an architectural mismatch between the organisation of knowledge and the organisation of authority. Understanding that distinction changes the nature of the governance debate. Better evidence improves collective understanding. It does not automatically redistribute authority. The question confronting ocean governance therefore ceases to be whether governments possess sufficient scientific knowledge. Increasingly, the more difficult question is whether the institutions through which that knowledge must travel have evolved quickly enough to govern the world that science has already revealed.
Where the Science Meets the Institutions
The institutional dynamics identified above become most visible where scientific assessment encounters institutions charged with making decisions. It is here, rather than within the assessments themselves, that the relationship between evidence and obligation is tested.
The International Seabed Authority provides perhaps the clearest illustration. Scientific understanding of deep-sea ecosystems has advanced rapidly over the past decade. Research increasingly points to extraordinary biodiversity associated with polymetallic nodule fields, exceptionally slow rates of ecological recovery and significant uncertainty surrounding cumulative environmental impacts. WOA III reflects this expanding body of knowledge, situating deep-sea ecosystems within broader planetary processes rather than treating them as isolated geological environments. None of this evidence is institutionally absent. Scientific knowledge is deeply embedded within the institutional conversation. Its presence, however, does not determine institutional outcomes. Scientific authority enters the negotiation as one highly influential form of authority among several. It shapes deliberation. It does not replace judgement.
The International Maritime Organization demonstrates the same institutional pattern through a different lens. The Organization’s adoption of the 2023 Revised Greenhouse Gas Strategy marked a significant evolution in the regulation of international shipping. Scientific understanding of climate change unquestionably informed those negotiations. Yet the eventual agreement emerged through political bargaining over issues extending well beyond atmospheric science. The resulting outcome was therefore neither purely scientific nor purely political. It was institutional.
The subsequent attempt to convert that strategy into binding mid-term measures has reinforced the same institutional dynamic. IMO approved a draft Net-Zero Framework in 2025 combining a marine fuel standard with an emissions-pricing mechanism, but formal adoption was deferred as Member States continued negotiating its economic and distributional consequences. Scientific understanding informed the negotiations; political judgement continues to determine their pace and outcome.
Regional fisheries management organisations illustrate the same dynamic in an even more familiar context. Many major RFMOs maintain scientific advisory bodies capable of producing detailed stock assessments, ecosystem analyses and harvesting recommendations. Those recommendations are then considered by commissions composed of governments balancing conservation objectives against economic dependence, food security, employment and regional political realities. The scientific advice is rarely dismissed outright. Nor is it automatically adopted. Instead, it becomes one authoritative input within a broader process of negotiated judgement.
In each case, science is neither ignored nor supreme. It informs institutions whose institutional purpose is not simply to identify the technically optimal outcome, but to reconcile legitimate, and often competing, public interests within frameworks established by international law.
The central question raised by WOA III is therefore not whether governments occasionally depart from scientific advice. The more searching question is whether existing institutional architectures require governments to explain those departures with a level of rigour proportionate to the scientific consensus from which they diverge. At present, the answer varies considerably across the international system. Scientific authority possesses substantial epistemic legitimacy. What it rarely enjoys is institutional priority. Many ocean institutions are procedurally structured—or expressly required—to receive and consider scientific evidence. They are far less frequently required to demonstrate, in comparable detail, why political decisions depart from it.
That distinction marks the boundary between consultation and obligation. It also explains why the World Ocean Assessment occupies such a distinctive position within contemporary ocean governance. The issue is not whether science reaches institutions. It plainly does. The issue is what institutions are designed by their mandate to do once it arrives.
What WOA III Changes — and What It Does Not
WOA III introduces features not present in the same form in its predecessors. It contains a dedicated global overview of ocean governance, gives Indigenous, traditional owner and local community knowledge a dedicated and cross-cutting place within the assessment, and incorporates sustainability pathways alongside its assessment of present conditions.
These are meaningful developments. They reflect a considered effort to make the assessment more useful to the governance systems it is designed to inform. The governance chapter in particular signals institutional awareness of the gap between scientific output and policy uptake that previous cycles had documented but not directly addressed.
What WOA III cannot do, by design, is close that gap. The governance chapter describes fragmentation. It does not resolve it. The sustainability pathways are not commitments. The expanded knowledge base does not create expanded obligation.
The assessment’s own framing is candid about this. It provides, in the words of its mandate, a scientific basis for the consideration of ocean issues. Consideration is the operative term. The distance between consideration and obligation is precisely the distance this issue has examined.
The institutional settlement established when the Regular Process was created remains intact. The World Ocean Assessment continues to provide governments with the strongest integrated scientific basis available for considering ocean issues. What it cannot do — because it was never designed to do so — is determine what those considerations ultimately require. The evolution of the assessment has therefore outpaced the evolution of the institutional architecture surrounding it. That may be WOA III’s most important lesson.
What to Watch
Three developments will test whether the dynamics this issue has examined are beginning to shift.
First, the General Assembly’s reception of WOA III in its 2026 ocean resolutions will indicate whether the assessment’s governance chapter prompts any institutional reflection on the design of the Regular Process itself — or whether it is received as previous assessments have been, noted with appreciation and referred back to the systems it describes.
Second, BBNJ COP1, now confirmed for 11–22 January 2027, will be one of the first major treaty-implementation moments following WOA III’s release. Whether delegations treat the assessment as an evidentiary foundation for the operational decisions COP1 must make — on environmental impact assessment standards, on area-based management tools, on the scientific and technical body’s mandate — will reveal something important about whether the governance chapter’s existence changes anything in practice.
Third, continuing scientific and policy advocacy for establishing an International Panel for Ocean Sustainability — modelled on the IPCC but purpose-built for ocean governance — will continue to surface in scientific and policy circles. The case for such a body rests precisely on the argument this issue has made: that the WOA process, however scientifically rigorous, lacks the embedded relationship with legal obligation that would allow its findings to structure political commitment rather than merely inform it. Whether that argument gains institutional traction will be one of the more consequential governance questions of the next decade.
Conclusion
Arendt’s question — whether truth is of its very essence impotent — was not asked in despair. It was asked as an analytical challenge: to understand the structural conditions under which truth operates in political life, and therefore to understand what it would take for those conditions to change.
The World Ocean Assessments are not impotent in the ordinary sense. They have shaped debates, informed negotiations, and provided the evidentiary basis for positions that states and coalitions have advanced across multiple governance forums. WOA III, arriving at a moment of unprecedented scientific convergence on the condition of the global ocean, will do the same.
But impotence in Arendt’s sense is structural rather than empirical. In the terms developed in her essay, factual truth and political power operate through different logics. Scientific consensus establishes what the evidence supports; governance determines what institutions ultimately require. The gap between those two functions is not filled by more science, however rigorous. It is filled by institutional architecture that converts the one into the other.
The ocean governance system has the science. Three assessments in, it has it in extraordinary depth and detail. What it does not yet have is the architecture that makes that science structurally unavoidable — that requires the institutions governing ocean use to account for what the evidence shows, rather than merely consider it.
Until that architecture exists, the question Arendt posed remains the right one to ask.
Further Reading
Academic & Scholarly
The Intergovernmental Panel on Climate Change and the Science–Policy Interface — Simon Shackley & Brian Wynne
A foundational examination of how scientific consensus is constructed, communicated and incorporated into international political processes — essential context for the institutional comparison this issue develops.
Marine Policy: An Introduction to Governance and International Law of the Oceans (2nd ed., 2019) — Mark Zacharias & Jeff Ardron
An accessible but rigorous analysis of the institutional architecture underpinning contemporary ocean governance and its relationship to scientific knowledge.
Epistemic Communities and International Policy Coordination — Peter M. Haas
A classic account of how expert communities shape international cooperation while operating withinpolitical institutions — directly relevant to the science-policy interface the WOA inhabits.
Primary Sources
Third World Ocean Assessment (WOA III) — United Nations, 2026
The principal assessment examined throughout this issue; the governance chapter and sustainability pathways sections are the most analytically significant additions to the series.
United Nations Convention on the Law of the Sea (1982)
The foundational legal framework governing the oceans and the foundation upon which subsequentinstitutional developments — including the Regular Process itself — continue to rest.
Agreement under UNCLOS on the Conservation and Sustainable Use of Marine Biological Diversity of Areas Beyond National Jurisdiction (BBNJ Agreement). Adopted 19 June 2023; entered into force 17 January 2026.
An important illustration of the continuing institutional evolution of ocean governance and the growing roleof scientific and technical institutions within it.
Literary & General Non-Fiction
Truth and Politics — Hannah Arendt. First published in The New Yorker (1967); subsequently collected in Between Past and Future, expanded edition (1968)
The essay from which this issue’s epigraph is drawn; essential reading for understanding the structural relationship between factual truth and political authority that the WOA’s institutional position embodies.
The Sea Around Us — Rachel Carson
A landmark work that transformed public understanding of the ocean and remains a powerful reminder that scientific knowledge consistently precedes the institutional change it demands.
Global South Perspectives
Towards Equity and Justice in Ocean Sciences — Asha de Vos, Sergio Cambronero-Solano, Sangeeta Mangubhai, Leila Nefdt, Lucy C. Woodall & Paris V. Stefanoudis, npj Ocean Sustainability 2, 25 (2023)
A Global South-led account of the structural inequities underlying who produces ocean knowledge — funding, authorship, data infrastructure — a necessary counterweight to the predominantly Northern scientific architecture that produces assessments such as the WOA.
Engaging the Tropical Majority to Make Ocean Governance and Science More Equitable and Effective — Ana K. Spalding et al., npj Ocean Sustainability 2, 8 (2023)
A companion analysis focused squarely on governance rather than knowledge production, examining how the underrepresentation of tropical, largely Global South states in ocean governance institutions shapes whose priorities those institutions serve.
Next Issue
The Deep Brief — Issue 07
Who Speaks for the Ocean? — Divided Authority and the Future of the Ocean Order