To view properly, download a browser which supports frames. The sanctuary can be found on the Southern half of Western Baffin Island. Running 250 km along the Eastern shore of Foxe Basin, it encompasses the coastal section of the Great Plain of the Koukdjuak. At this sanctuary in 1929 a federal biologist recorded the first eggs and nests of blue phase Snow Geese. The Great Plain of the Koukdjuak contains much wet and dry tundra.
Small streams criss-cross wet sedge meadows and marshy tundra.
The low lands are dotted with countless ponds and small lakes which are muddy and shallow providing birds optimal water bird habitat. Wide beaches border Foxe Basin, and the tidal flat can be 15 km wide with low relief and a large tidal range. Some areas are hard to reach so little research has been done in recent years. At the end of breeding season, from one to two million geese may be present on the Great Plain of the Koukdjuak, including Lesser Snow Geese, Canada Geese, and Brant. The world's largest Lesser Snow Geese colony is found on the Great Plain of the Koukdjuak.