North Twin Island is an uninhabited Arctic

Arctic

The Arctic is a region located at the northern-most part of the Earth. The Arctic consists of the Arctic Ocean and parts of Canada, Russia, Greenland, the United States, Norway, Sweden, Finland, and Iceland. The Arctic region consists of a vast, ice-covered ocean, surrounded by treeless permafrost...

 island located east of Akimiski Island

Akimiski Island

Akimiski Island is the largest island in James Bay , Canada, which is part of the Qikiqtaaluk Region of the territory of Nunavut. It has an area of , making it the 163rd largest island in the world, and Canada's 29th largest island. Akimiski Island is only from the province of Ontario...

 in James Bay

James Bay

James Bay is a large body of water on the southern end of Hudson Bay in Canada. Both bodies of water extend from the Arctic Ocean. James Bay borders the provinces of Quebec and Ontario; islands within the bay are part of Nunavut...

 on the southern end of Hudson Bay

Hudson Bay

Hudson Bay , sometimes called Hudson's Bay, is a large body of saltwater in northeastern Canada. It drains a very large area, about , that includes parts of Ontario, Quebec, Saskatchewan, Alberta, most of Manitoba, southeastern Nunavut, as well as parts of North Dakota, South Dakota, Minnesota,...

. The smaller, similarly-shaped, South Twin Island

South Twin Island (Nunavut)

South Twin Island is an uninhabited Arctic island located east of Akimiski Island toward the center of James Bay. The larger, similarly-shaped, North Twin Island is located approximately 10 km northwest. South Twin Island has more mossy tundra and fewer trees than North Twin Island...

 is located approximately 10 km southeast. Together, they are known as the Twin Islands

Twin Islands (Nunavut)

The Twin Islands are similarly shaped Arctic islands in the Qikiqtaaluk Region of Nunavut, Canada. They are located in central James Bay, north east of Akimiski Island, and west of Quebec. The group includes North Twin and South Twin islands.-Geography:Approximately separate the two islands...

, and are part of the Qikiqtaaluk Region of the Canadian

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

 territory of Nunavut

Nunavut

Nunavut is the largest and newest federal territory of Canada; it was separated officially from the Northwest Territories on April 1, 1999, via the Nunavut Act and the Nunavut Land Claims Agreement Act, though the actual boundaries had been established in 1993...

.

It is an important breeding site for Canada Geese and Semipalmated Plovers. It is also home to resident Willow Ptarmigans and Arctic Terns.