Sirmilik National Park is in Baffin Island, Nunavut and covers an area of 8,571 square miles. It is open year-round. Sirmilik National Park is as dramatic as the cerulean sky that stretches over the Canadian Arctic on a seemingly endless summer day. Simirlik (the name means "glacier" in Inuktitut) was created  by the Inuit and the Canadian federal goventmet in 1999 to limit the petroleum industry's plans to begin exploring for oil in Lancaster Sound.

The park's Bylot Island Migratory Bird Sanctuary is a mountainous isle of ice fields and glaciers, famous for its enormous population of nesting seabirds. Oliver Sound is a deep and picturesque fjord, while the Borden Peninsula is a stream-crossed plateau that can be comfortably traversed by hikers. The park's southern regions keep a low profile. From there the land rises sharply to a flat, lifeless plateau that ends in the north and east in immense cliffs lining a coast riven by fjord. On the Borden Peninsula, erosion has carved out fantastic rock shapes called hoodoos.

Parts of Sirmilik are too barren to support much wildlife, but the coastal lowlands and the marine waters surrounding the island teem with life. Peary caribou, wolves, and foxes inhabit the Borden Peninsula. Lemmings are common and visitor may see them everywhere one year but not at all the next.