The Atlantic Is Back on the Table: Coastal Nations Converge on London for High-Stakes 2027 Fishing Talks
Every autumn, a group of diplomats, fisheries scientists, and industry representatives descend on London to do something deceptively simple: decide how much fish the world's most productive ocean can afford to give up. The 2026 edition of that gathering, which kicked off on Tuesday, October 13, carries unusual weight. After years of broken agreements, collapsed certification schemes, and politically charged overfishing disputes, the parties arriving in the British capital are working against a backdrop that is both more promising — and more fraught — than it has been in years.
Coastal states are meeting in London from Tuesday, October 13, to consult on fishing opportunities for blue whiting, North Sea herring, and mackerel, with the aim of reaching agreement on maximum catches for 2027 and discussing future quota shares. The consultations, which will stretch over two weeks, represent the most consequential annual exercise in North Atlantic fisheries governance — one that will determine how billions of dollars in commercial seafood is caught, traded, and consumed around the globe.
A Two-Week Schedule Packed With Competing Interests
The talks are not a single meeting but a staggered series of bilateral and multilateral consultations, each covering a different stock and involving a slightly different cast of national delegations. The consultations begin with blue whiting on Tuesday, involving the Faroe Islands, the United Kingdom, the European Union, Iceland, and Norway, with that meeting scheduled to conclude around lunchtime on Wednesday, October 14.
On Wednesday and Thursday, representatives of the Faroe Islands, the United Kingdom, Iceland, Norway, and Russia are due to consult on North Sea herring. Russia's inclusion in the herring talks is a notable geopolitical wrinkle, one that has grown more complicated in the years since the invasion of Ukraine upended relationships across European trade and diplomacy. Despite those tensions, fish do not recognize political borders, and shared management of migratory stocks demands that even adversarial nations sit across the same table.
The following week, consultations on mackerel are scheduled for Tuesday, Wednesday, and Thursday, involving the Faroe Islands, the United Kingdom, the European Union, Greenland, Iceland, and Norway. Mackerel is the most commercially valuable of the three stocks under discussion and, by many measures, the most politically contentious. The inclusion of Greenland in those talks adds yet another dimension, reflecting just how broadly mackerel has redistributed itself across the North Atlantic as ocean temperatures have shifted.
A central issue across all three consultations is how to address the advice issued by the International Council for the Exploration of the Sea (ICES), agree on maximum fishing limits for 2027, and negotiate the future sharing of those opportunities — discussions that will also cover quota-sharing arrangements, fisheries management regulations, transfer measures, and measures under the North-East Atlantic Fisheries Commission (NEAFC).
What ICES Is Telling the Negotiators
The scientific backdrop to this year's talks is notably more optimistic than it has been in recent memory, though scientists and advocates are careful to prevent that optimism from curdling into complacency. ICES has raised its catch advice for Norwegian spring-spawning herring, Atlantic mackerel, and blue whiting for 2027, with the recommended mackerel catch more than doubling. That doubling, however striking, comes after years of severe cuts and follows a period when mackerel stocks fell below the minimum sustainability threshold — a fact that is keeping conservation advocates on edge even as the fleets gear up for better news.
Mackerel: A Dramatic Turnaround, With Caveats
ICES advises that when the maximum sustainable yield approach is applied, mackerel catches in 2027 should be no more than 352,938 tonnes — a 102 percent increase, more than double the 2026 advice. That number will strike many in the industry as a vindication, given the panic that surrounded the stock just twelve months ago. But a closer read of the science reveals a more complicated picture.
The North Atlantic Pelagic Advocacy Group (NAPA) said the improvement was welcome but warned that the stock remained close to its critical limit, with the mackerel spawning stock sitting only 4.5% above the threshold where the risk of stock collapse increases — while highlighting the 33% probability of the spawning stock biomass falling below its critical limit in 2028 under the recommended catch scenario. In other words, the stock has climbed out of a hole, but it is not yet standing on firm ground.
Iceland's Marine and Freshwater Research Institute explains that the estimated biomass of spawning mackerel has risen above a threshold used to calculate catch advice, leading to a higher recommended catch. The biological signal is real. The question is whether the coastal states will honor it — or whether, as has happened repeatedly over the past decade, unilateral decisions by individual nations will push combined catches well above the agreed limit.
The Marine Stewardship Council's analysis of ICES data shows that mackerel catches exceeded scientific advice by an average of 32 percent over the past decade, and across mackerel, Norwegian spring-spawning herring, and blue whiting combined, the excess catch over the same period totals more than 7.2 million tonnes. That figure — seven million tonnes of fish hauled from the ocean beyond what the science recommended — is the original sin haunting every conversation in London this week.
Blue Whiting: A More Positive Outlook, Still Constrained by Politics
ICES has advised that catches of Northeast Atlantic blue whiting should not exceed 1,064,191 tonnes in 2027 when applying the agreed long-term management strategy — an advice that represents a 25% increase on the 2026 advice of 851,344 tonnes. The jump is significant and reflects genuine stock improvement, but it comes with its own asterisk.
The new figure remains 4.2% lower than the expected catches for 2026, which are estimated at 1,110,513 tonnes — meaning that even the higher recommended limit still falls short of what the fleets are likely pulling from the water this year. That gap between advice and reality is precisely the dynamic that has fueled years of acrimony between the EU and other coastal states.
The higher blue whiting recommendation reflects three factors: expected stock growth in 2027, revised estimates indicating more fish in recent years than previously thought, and a strong generation of fish born in 2024. ICES said the increase resulted from a combination of an upward revision of historical stock biomass and that strong 2024 year class, with the 25% increase also representing the maximum permitted under the blue whiting management plan's stability clause. That clause, which caps annual TAC increases at 25% and decreases at 20%, is designed to prevent the kind of boom-and-bust swings that have historically destabilized pelagic fisheries.
ICES assessed the blue whiting stock as being above MSY Btrigger and above Blim, indicating that reproductive capacity remains intact, with fishing mortality expected to remain below the level consistent with maximum sustainable yield. For a stock that has spent considerable time under pressure, that assessment is meaningful. But history shows that healthy stock assessments tend to invite political pressure for higher catches, not more restraint.
The blue whiting advice applies to the stock distributed throughout the Northeast Atlantic, from the Barents Sea and Norwegian Sea to waters west of Ireland and the Bay of Biscay — a geographic range that illustrates why so many nations claim a stake in the quota and why reaching a unified sharing agreement has proven so elusive. Blue whiting, unlike closely related cod, isn't usually fished for human consumption and mostly ends up as fishmeal or fish oil used to produce feed for aquaculture — making it a critical input for the global salmon and shrimp farming industries, even if it never appears on a restaurant menu in the United States.
North Sea Herring: Stocks Are Recovering — If Nations Can Stay Disciplined
Scientists have advised a higher catch limit for North Sea herring in 2027, with a recommended total allowable catch of up to 396,680 tonnes — a 21% increase compared with the agreed quota for 2026. The improvement is grounded in solid survey data rather than optimistic modeling. ICES says the stock is being harvested sustainably and is now above the precautionary spawning biomass level of 1.0 million tonnes, with resource researcher Gjert Dingsør noting that the higher quota advice reflects an upward revision of the stock based on improved survey results, including acoustic monitoring.
For the North Sea herring talks specifically, Russia's role alongside the Faroe Islands, the UK, Iceland, and Norway adds a layer of diplomatic complexity that purely fisheries-focused observers sometimes underestimate. Herring quotas in the Norwegian Sea have been a flash point between Russia and western states before, and the current geopolitical climate does nothing to simplify those conversations.
The Overfishing Problem That Won't Go Away
If the science is improving, why does the atmosphere surrounding these talks remain so tense? The answer lies in a years-long failure of coastal states to translate scientific advice into binding, shared agreements — and the consequences that failure has already produced.
The continued failure of coastal states to agree on science-based quota sharing for mackerel, Atlanto-Scandian herring, and blue whiting has contributed to overfishing, threatened the long-term health of these critically important pelagic stocks, and impacted the potential for important certifications within aquafeed supply chains, ultimately putting market stability and consumer confidence at risk. That certification issue is not abstract. The loss of Marine Stewardship Council sustainability credentials — which several of these stocks have already suffered — has real consequences for supermarket shelves and restaurant supply chains in the United States and across Europe.
The European Association of Fish Producers Organisations (EAPO) has been particularly vocal about where the blame lies. EAPO stated that "the EU continues to pay the price for the longstanding overfishing — up to 40% — by others," adding that "action against this irresponsible behaviour is needed, as the most important and valuable EU pelagic fishery is at risk of being wiped out." That is language with very little diplomatic cushioning — and it reflects genuine frustration that has built over several years.
A central theme throughout EAPO's position paper is the failure of coastal states to reach comprehensive quota-sharing agreements for mackerel, blue whiting, and Atlanto-Scandian herring, with EAPO noting that "this uncomfortable situation — no full access nor repayment of the quota share — has lasted for a prolonged period: the EU industry has been without the complete access that was paid for since 2021."
The quota arithmetic behind that frustration is stark. The EU claims 36.5% of the blue whiting quota, the Faroe Islands claims 35.5%, Norway claims 26.2%, Iceland claims 22.9%, and the UK claims 8.5% — totals that add up to nearly 130% of the quota, meaning overfishing has continued to plague the fishery. When the shares that individual nations unilaterally assert add up to well beyond 100% of the scientifically advised total, the resulting overfishing is not a surprise — it is arithmetic.
Industry Groups Demand Action, Not Just Agreement in Principle
The European Association of Fish Producers Organisations has welcomed a more positive outlook for pelagic fisheries in 2027, supporting substantial increases in fishing opportunities for mackerel, blue whiting, and herring while warning that years of excessive catches by some coastal states continue to threaten stock recovery. That combination — welcoming higher quotas while simultaneously demanding enforcement mechanisms against the very behavior that drove stocks down in the first place — captures the central tension of the London talks.
EAPO supports a 102.4% increase in the mackerel TAC to 352,938 tonnes, a 25% increase for blue whiting to 1.06 million tonnes, and a 10% increase for Atlanto-Scandian herring to 585,015 tonnes. Crucially, the organization is not simply asking for bigger catches — it is demanding that those catches be disciplined by actual agreements, rather than unilateral declarations that collectively blow past the recommended ceiling.
EAPO also called for tighter controls on fishing activity in international waters and said coastal states should introduce measures to prevent the transhipment of mackerel — a practice that has been used to obscure the true origin and volume of catches, undermining the traceability that seafood buyers and sustainability certifiers require.
NAPA continues to urge all seven coastal states — Norway, Iceland, the Faroes, Greenland, the UK, the EU, and the Russian Federation — to reach a comprehensive sharing agreement that ensures combined catches remain within scientifically advised limits. NAPA's leverage in these conversations is real: members of NAPA have committed to its pledge to source alternative species if Northeast Atlantic coastal nations can't end long-term overfishing. For industries that depend on blue whiting and mackerel as aquafeed ingredients, that threat carries serious economic weight.
Historical Context: Why These Talks Are So Hard to Crack
The difficulty of these negotiations is not new, and it is not unique to fish. Whenever a shared resource crosses international borders — whether it is a river, a mineral deposit, or a migratory fish stock — the incentive structure pushes individual actors toward taking more than their fair share before someone else does. In fisheries science, this is sometimes called the tragedy of the commons, and the North Atlantic pelagic fisheries have been living through a textbook version of it for over a decade.
The mackerel dispute, in particular, escalated sharply after the species began appearing in Icelandic and Faroese waters in significant numbers around 2010, largely as a result of warming ocean temperatures pushing the stock northward. Iceland and the Faroe Islands, which had not previously participated in the mackerel fishery at scale, began claiming large shares that the existing coastal state framework — built around historical distribution patterns — had not accounted for. Neither nation accepted the allocations that the EU, Norway, and the UK proposed. The result was years of fishing above agreed limits, stock decline, and the loss of MSC certification that some stocks still haven't recovered.
A previous meeting in London ended without any agreement being reached on pelagic fish, with the coastal states pledging to meet again in October — which is precisely what is happening now. The October round is, in that sense, a continuation of unfinished business rather than a fresh start. The improved ICES advice gives the parties a stronger reason to find common ground, but the political and economic incentives that have prevented agreement in the past have not disappeared.
What Happens If They Don't Agree
The failure scenario is well understood by everyone in the room: nations set their own quotas unilaterally, those quotas collectively exceed scientific advice, the stocks decline again, and the process repeats. It is a cycle that the North Atlantic has seen play out multiple times, and its downstream effects extend far beyond the fishing vessels themselves.
Sustainability certifications, particularly the MSC's blue tick, have become a baseline requirement for major seafood retailers in the United States and Europe. All three of the species under discussion have faced sustainability issues for multiple years, with some stocks having lost Marine Stewardship Council certification more than four years ago. The loss of that certification hits exporters hard, particularly in markets like the United States where environmentally conscious consumers and major supermarket chains increasingly require it as a condition of business.
For the aquafeed industry — which uses blue whiting meal and fish oil as key inputs in the production of farmed salmon, shrimp, and other species — the instability has supply-chain implications that ripple all the way to grocery stores and restaurants across America. When the quota math falls apart in London, it eventually shows up as a price spike or supply gap in the seafood aisle months later.
Norway's Perspective: Cautious Optimism With Conditions
Norwegian fishing organizations have welcomed sharply higher ICES quota advice for 2027, with the mackerel recommendation more than doubling from 174,357 tonnes in 2026 to the newly advised 352,938 tonnes — advice welcomed by Pelagisk Forening, Norges Fiskarlag, and Fiskebåt. Norway's fishing industry has historically been among the more disciplined participants in these negotiations, generally favoring science-based limits over the kind of unilateral expansionism that has characterized some other coastal states' approaches. That posture gives Norwegian delegations some moral authority in London — though authority and leverage are not the same thing.
The increase in Atlanto-Scandian herring advice is linked to strong 2021 and 2022 year classes entering the spawning stock, with scientist Erling Kåre Stenevik noting that both year classes were stronger than average and were strengthening the stock. Young fish entering the spawning population represent the future productivity of the stock, and strong year classes are one of the clearest leading indicators that a fishery is heading in the right direction — provided the pressure on the adult stock doesn't increase faster than those young fish can mature.
The Road Ahead: Quotas Are the Easy Part
Even if the coastal states reach agreement on the maximum total allowable catches for all three stocks during the London talks — which is not guaranteed — the harder negotiation over how those catches are divided among individual nations will follow. Total allowable catch is the ceiling; national quota shares are the floor plan, and carving up that floor plan has proven politically impossible for years running.
An increase in scientific advice does not mean any given country's quota will automatically rise. The eventual total allowable catch and each nation's share will depend on international negotiations between the parties involved in the fishery and subsequent decisions on fishing opportunities. For fishing-dependent communities in Ireland, Scotland, the Faroe Islands, Iceland, and Norway, the difference between what the science permits and what each nation eventually negotiates can mean the difference between a viable season and a catastrophic one.
NAPA warned that the imminent end of its blue whiting Fishery Improvement Project could mean its members would not be able to take advantage of the improved outlook — a reminder that sustainability certification isn't just a label applied to existing fishing. It requires ongoing documentation, auditing, and compliance with management targets. If those targets aren't enshrined in actual signed agreements, the certification infrastructure falls apart regardless of what the stock is actually doing.
The conversations happening in London this week are, at their core, a test of whether a collection of sovereign nations can govern a shared resource in a way that serves everyone's long-term interests rather than any single nation's short-term appetite. The science has given them the best opportunity in years to get it right. Whether they take it is a different question entirely — one that every commercial fisherman, seafood buyer, and conservation advocate with skin in the game is waiting to see answered.
