
Davis Strait is a northern arm of the Atlantic Ocean that lies north of the Labrador Sea. It lies between mid-western Greenland and Baffin Island in Nunavut, Canada. To the north is Baffin Bay. The strait was named for the English explorer John Davis (1550–1605), who explored the area while seeking a Northwest Passage. By the 1650s it was used for whale hunting.

Hall Basin is an Arctic waterway between Hall Land in Greenland to the west and Canada's northernmost island to the east, Ellesmere Island.

Hans Island is a barren uninhabited island measuring 1.3 km2 (0.5 sq mi), 1,290 m (4,230 ft) long and 1,199 m (3,934 ft) wide, in the centre of the Kennedy Channel of Nares Strait—the strait that separates Ellesmere Island from northern Greenland and connects Baffin Bay with the Lincoln Sea. Hans Island is the smallest of three islands in Kennedy Channel off the Washington Land coast; the others are Franklin Island and Crozier Island. The strait at this point is 35 km (22 mi) wide, placing the island within the territorial waters of both Canada and Greenland (Denmark). A theoretical line in the middle of the strait goes through the island.

Kane Basin is an Arctic waterway lying between Greenland and Canada's northernmost island, Ellesmere Island. It links Smith Sound to Kennedy Channel and forms part of Nares Strait. It is approximately 180 kilometres in length and 130 km at its widest.

Kennedy Channel is an Arctic sea passage between Greenland and Canada's most northerly island, Ellesmere Island.

Lincoln Sea is a body of water in the Arctic Ocean, stretching from Cape Columbia, Canada, in the west to Cape Morris Jesup, Greenland, in the east. The northern limit is defined as the great circle line between those two headlands. It is covered with sea ice throughout the year, the thickest sea ice in the Arctic Ocean, which can be up to 15 m (49 ft) thick. Water depths range from 100 m (330 ft) to 300 m (980 ft). Water and ice from Lincoln Sea empty into Robeson Channel, the northernmost part of Nares Strait, most of the time.

Nares Strait is a waterway between Ellesmere Island and Greenland that connects the northern part of Baffin Bay in the Atlantic Ocean with the Lincoln Sea in the Arctic Ocean. From south to north, the strait includes Smith Sound, Kane Basin, Kennedy Channel, Hall Basin and Robeson Channel. During 1962–64, a 20 km (12 mi) by 10 km (6.2 mi) ice island drifted southward from the Lincoln Sea through the Nares and Davis Straits to the Atlantic Ocean. Nares strait has a nearly permanent current from the north, powered by the Beaufort Gyre, making it harder to traverse for ships coming from the south.

Robeson Channel is a body of water lying between Greenland and Canada's northernmost island, Ellesmere Island. It is the most northerly part of Nares Strait, linking Hall Basin to the south with the Arctic Ocean to the north. The Newman Fjord in Greenland has its mouth in the Robeson Channel.

Smith Sound is an uninhabited Arctic sea passage between Greenland and Canada's northernmost island, Ellesmere Island. It links Baffin Bay with Kane Basin and forms part of the Nares Strait.