Scientists and Inuit communities in the Canadian Arctic are intensifying efforts to understand dramatic environmental shifts occurring in a vital year-round open water area located between Canada and Greenland. The region, known by multiple names including the North Water, Pikialasorsuaq in Greenlandic Inuit, and Sarvarjuaq in Nunavut, spans approximately 85,000 square kilometers and represents one of the Arctic’s most biologically significant ecosystems. The polynya sustains algae blooms, seabirds, whales, seals, walruses, and polar bears that depend on access to open water even during winter months.
Researchers including scientist Andrew Hamilton at the University of Alberta and local observer Terry Noah are deploying underwater instruments and collecting data to monitor conditions beneath the ice surface. Their work has become increasingly urgent as the region experiences an unusual consequence of climate warming: rather than simply losing ice coverage, the failure of a critical ice bridge formation in Nares Strait is allowing additional sea ice to drift southward, potentially covering the polynya and disrupting the ecosystem. The ice arch, a crescent-shaped bridge that normally forms annually across the strait’s northern section, has failed to develop reliably over the past two decades, fundamentally altering regional ice dynamics.
International efforts to establish joint protection of the polynya are advancing on the Canadian side, with Canada designating the Sarvarjuaq marine protected area in March this year. However, Greenland has progressed more slowly on parallel commitments, with officials citing concerns about protecting Indigenous rights alongside conservation goals. A 2017 commission report recommended creating an Inuit-managed protected area jointly governed by both nations, though implementation continues to face practical and political obstacles.
Scientists have proposed developing a comprehensive monitoring network to observe the polynya from multiple vantage points, though cross-border collaboration faces logistical challenges, including the lack of passports among many Inuit residents. Experts emphasize that combining scientific instrument data with traditional ecological knowledge from communities living in the region year-round is essential for understanding the full scope of environmental transformation occurring in this critical Arctic zone.
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