In a recent study led by Project Assistant Professor Monica Ogawa from the National Institute of Polar Research, Japan, researchers collaborated with Inuit hunters around Inglefield Bredning (Kangerlussuaq), Greenland, to investigate spatial differences in the diet of ringed seals in relation to capture locations. The findings were published in Communications Earth & Environment on February 18, 2026.

“Stomach content analysis is one of the most classical methods for studying animal diets. However, because stomach contents reflect only very recent feeding—within just a few hours for seals—this approach has often been seen as a limitation. We turned this limitation into an advantage by comparing what seals had eaten with where they were captured, allowing us to investigate recent feeding activity in specific locations. This approach offers a new way to understand the feeding behavior of marine mammals,” said Dr. Ogawa.

The findings revealed not only the importance of glacier fronts as feeding grounds for seals, but also that diet varies with distance from the glacier, indicating that the loss of these habitats could have wider consequences for Arctic marine ecosystems. As Arctic glaciers continue to retreat, many tidewater glaciers are shrinking back onto land, eliminating the upwelling processes that create these feeding hotspots. The researchers warn that the disappearance of glacier-front foraging grounds could force seals to change their diet, distribution, and body condition, which in turn would affect their predators, both animals, such as polar bears, and Inuit communities that rely on seals.

“This study was made possible through the cooperation of many Inuit hunters. By working together with Inuit communities, we could obtain data—both in quality and quantity—that scientists alone could never achieve. And above all, this collaboration made the research truly enjoyable,” said Dr. Ogawa.