Scientists and Inuit advocates are working to document and protect the North Water polynya, a rare expanse of open water between Greenland and Canada’s Ellesmere Island that has remained ice-free through millennia of Arctic cold but now faces an uncertain future as global temperatures rise. The effort has gained urgency from projections that warming, counterintuitively, may increase ice cover in this anomaly of the High Arctic rather than diminish it.
The polynya occupies a stretch of the Arctic Ocean between northern Greenland and Ellesmere Island in the Canadian territory of Nunavut. The term “polynya” describes an area of persistent open water surrounded by sea ice, and the North Water is among the largest and most biologically productive such features in the Arctic. It forms when persistent northerly winds push drifting ice southward away from a glacial ice bridge, while relatively warm, saline water upwells from depth. The combination keeps a stretch of water roughly the size of several thousand square kilometers open even in the depths of winter, when surrounding seas are locked in ice.
What Happened
The research and advocacy effort has coalesced around a proposal to establish an Inuit-governed protected area across the polynya and its surrounding coastline. The proposal, developed in collaboration with Inuit organizations in Greenland and Canada, would formalize Indigenous stewardship of the region while accommodating regulated study by outside scientists. Supporters say the framework reflects a shift toward Indigenous-led conservation in a part of the world where traditional ecological knowledge and modern climate science have often been treated as separate endeavors.
Terry Noah, an Inuk hunter and resident of Grise Fiord in Nunavut, recently completed a traverse of the sea ice extending from Canada’s northernmost permanent community, a hamlet of 144 people. Noah’s journey, undertaken as part of the documentation work, drew attention to both the resilience of the local landscape and the vulnerability of the environmental system that has shaped life in the region for generations. Grise Fiord lies near the southern edge of the Nares Strait, through which Arctic sea ice normally flows southward from the Lincoln Sea past Greenland and into Baffin Bay.
Scientists studying the area have documented rich biodiversity sustained by the open water. Populations of walrus, narwhal, beluga, and seabirds including thick-billed murres and ivory gulls use the polynya as a seasonal refuge and feeding ground. The upwelling that keeps the water open also drives phytoplankton blooms that anchor the food web, supporting fish, seabird colonies, and marine mammals. For Inuit communities in the region, the polynya functions as a critical hunting ground, with food security and cultural practice tied to its seasonal rhythms.
Why It Matters
The North Water presents a counterintuitive case in Arctic climate science. In most of the Arctic, warming has reduced sea ice extent and thickness. In the polynya, researchers say, warming may instead increase the ice that historically has been kept open, because the same processes responsible for keeping the water clear, including offshore winds, upwelling of warm saline water, and the formation of a stable ice arch at the northern end of Nares Strait, are each sensitive to atmospheric and oceanic change.
If warming disrupts the ice arch that forms each winter at the entrance to Nares Strait, multiyear ice from the Arctic Ocean could drift into the polynya region and persist. Altered wind patterns and freshwater inputs from melting Greenland glaciers could weaken the upwelling of warm subsurface water. Under some warming scenarios, the open-water anomaly could become more typical Arctic sea ice coverage, with cascading effects on marine life and on the communities whose hunting traditions are calibrated to the current pattern of break-up, open water, and refreeze.
The proposed protected area would establish management authority under Inuit organizations on both sides of the Nares Strait, with provisions for traditional use and regulated scientific research. Supporters argue that this framework ensures that decisions about the region’s future reflect the values and knowledge of those most directly connected to the land and water.
Background and Context
Polynyas are not unique to the region, but the North Water is unusual in its size, its position so far north, and its persistence through polar night. Similar features exist off the coasts of Antarctica and in parts of the Russian and Alaskan Arctic, but few combine all three characteristics. The North Water’s openness sustains primary productivity that rivals lower-latitude seas during the spring bloom, drawing marine birds and mammals from a wide surrounding area.
The cultural history is no less distinctive. Inuit communities on Ellesmere Island and in northwestern Greenland have hunted marine mammals at the polynya’s edge for centuries, with knowledge of ice conditions, weather, and wildlife behavior transmitted across generations. The hamlet of Grise Fiord, established in 1953 largely through a relocation of Inuit families from further south, sits within reach of the polynya’s southern influence and remains one of Canada’s northernmost permanent settlements.
Conservation proposals in the Canadian Arctic have historically been driven by federal and territorial governments. The polynya proposal reflects a broader turn toward Indigenous-led stewardship that has gained legal grounding through land-claim agreements and the federal government’s commitments under international instruments on Indigenous rights. The proposed arrangement would, if implemented, treat the surrounding region as a single ecological and cultural unit spanning the Canada-Greenland boundary, an unusual configuration for an Arctic conservation area.
Analysis:
The North Water polynya represents a case in which warming could paradoxically reduce rather than increase ice-free periods. The polynya forms through a combination of offshore winds pushing ice away and warm water upwelling from depth, processes sensitive to broader oceanic and atmospheric changes. The risk is not simply a thinner ice pack but a fundamental reorganization of an ecosystem that has depended on a specific set of physical conditions.
The proposal for Inuit governance marks a departure from historical conservation models that often excluded Indigenous communities from management decisions. If implemented, the protected area could serve as a precedent for similar arrangements across Canada’s North, where Indigenous rights and climate impacts increasingly intersect.
What to Watch Next
Researchers say baseline measurements collected now could prove invaluable for understanding future changes, making the current scientific effort both a study of the present and preparation for an altered Arctic. Key indicators include the formation and stability of the Nares Strait ice arch, sea-ice extent within the polynya through the winter, water temperature and salinity profiles, and the timing of the spring phytoplankton bloom.
Decisions on the protected-area framework are expected to move through Inuit organizations in Canada and Greenland and through the relevant federal and territorial authorities. The pace of those decisions, and the geographic scope of any final designation, will indicate whether the proposal survives as an Indigenous-led initiative or is reshaped by state-level processes.
At the community level, observations from hunters and Elders in Grise Fiord and nearby settlements, including changes in the arrival dates of seabirds and the condition of sea ice along travel routes, are likely to provide some of the earliest indications of any shift in the polynya’s behavior. Those observations are being incorporated into the documentation effort alongside instrument-based measurements.
Conclusion
The North Water polynya is a small, ecologically rich anomaly in a warming Arctic, and one whose future may run counter to the broader pattern of declining ice. The push to document it now, and to place its stewardship under Inuit governance, reflects both the scientific value of a vanishing baseline and a determination that decisions about the region’s future be made by those who know it best. The protected-area proposal remains under discussion, and the physical system it would safeguard remains subject to forces operating far beyond the High Arctic.
Sources:
The Guardian — theguardian.com/environment/2026/sep/03/the-place-that-never-freezes-the-arctic-habitat-where-global-heating-threatens-more-ice-not-less
Source: Guardian International
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Story synopsis gathered from: Guardian International — source
