North American coastal islands

Adak Island

Adak Island, largest of the central Aleutian Islands, Alaska (289 sq mi, Mt. Moffett 3,875 ft). WWII Army base from 1942, Cold War Navy anti-submarine base until NAF Adak closed March 31, 1997; now a small Aleut community.

Admiralty Island

Admiralty Island (Tlingit Kootznoowoo, "fortress of the bears") is a 1,664-square-mile island in Alaska's Tongass National Forest, second largest in the Alexander Archipelago, mostly national monument and wilderness, with about 1,500 brown bears, the world's densest bald eagle nests, and the village of Angoon.

Afognak Island

Afognak Island, second largest island of the Kodiak Archipelago, Alaska (700 sq mi, 40 by 25 miles). Alutiiq homeland, 1892 forest reserve, site of Afognak Village destroyed by the 1964 earthquake and tsunami, relocated to Port Lions.

Akimiski Island

Akimiski Island, largest island in James Bay, Nunavut, Canada (Cree 'the land across'); uninhabited 3,001 km² wetland island, Migratory Bird Sanctuary since 1941, disputed Cree Aboriginal title.

Akpatok Island

Akpatok Island: uninhabited Ordovician limestone island, largest in Ungava Bay, Nunavut, Canada (903 km2). Hosts one of the world's largest Thick-billed Murre colonies, over 20% of Canada's population; IBA NU007, no statutory protection.

Akutan Island

Akutan Island (Akutanax̂) is a volcanic island in the eastern Aleutians' Krenitzin group, 35 miles east of Unalaska, home to Akutan Volcano (1,303 m, last eruption 1992), the City of Akutan, and North America's largest seafood plant.

Amchitka Island

Amchitka Island, a 40-mile Aleutian island in the Rat Island group, hosted three US underground nuclear tests (Long Shot 1965, Milrow 1969, Cannikin 1971, the largest US underground test); assessments found no test-attributable radionuclide leakage.

Amelia Island

Amelia Island, the Isle of Eight Flags, is a barrier island in Nassau County, Florida, the northernmost on Florida's Atlantic coast, claimed by France, Spain, Britain, and the United States.

Amlia Island

Amlia Island is an uninhabited island near the east end of the Andreanof group of the Aleutian Islands, Alaska, adjacent to Atka Island, about 72 km long.

Amund Ringnes Island

Amund Ringnes Island is an uninhabited island in Nunavut, Canada, covering 5,255 km² in the Canadian Arctic Archipelago, discovered in 1901 during Otto Sverdrup's second Fram expedition.

Anna Maria Island

Anna Maria Island is a 7-mile Florida Gulf barrier island in Manatee County with three cities, no high-rises, a free trolley, Bean Point, and beaches hit by Helene, Milton, and red tide.

Annette Island

Annette Island (Tàakw.àani) is an island in the Alexander Archipelago, southeastern Alaska, south of Ketchikan. Home to Metlakatla and the Annette Islands Reserve, the only federal Indian reservation in Alaska, reserved for the Tsimshian by Congress in 1891.

Anticosti Island

Île d'Anticosti is a forested limestone island at the entrance to the Gulf of St. Lawrence in Quebec, Canada, and the largest island in Quebec.

Aristazabal Island

Aristazabal Island: large forested uninhabited island off the central north coast of British Columbia, Canada, southwest of Princess Royal Island in Hecate Strait; named 1792 by Caamaño for Spanish admiral Gabriel de Aristazábal; Crown land with Laredo limestone deposit.

Atka Island

Atka Island: largest island of the Andreanof group in the central Aleutians, Alaska, home to the active Atka volcanic complex (Korovin, Kliuchef, Sarichef vents) and the Aleut village of Atka on Nazan Bay.

Attu Island

Attu Island (Atux̂), westernmost of Alaska's Aleutians: 346 sq mi, uninhabited since 2010. Site of the June 1942 Japanese occupation and the May 1943 Battle of Attu, the only WWII land battle on North American soil.

Baby Island

Baby Island, also known as Hackney Island, is a small 600-foot-long islet in Saratoga Passage, Island County, Washington, at the mouth of Holmes Harbor near Whidbey Island.

Bainbridge Island, Washington

Bainbridge Island, Washington: an island city in Kitsap County in Puget Sound, 35 minutes from Seattle by ferry. Also City of Winslow (incorporated 1947); 24,825 residents (2020), 27.61 sq mi, Suquamish ancestral land, high-income Seattle suburb.

Bar Island

Bar Island: name of several small islands, chiefly the tidal island in Acadia National Park, Maine, joined to Bar Harbor by a sand bar walkable 1.5 hours around low tide; also islands in NSW, Canada, and the Marshall Islands.

Baranof Island

Baranof Island (Tlingit Shee), a 4,065 km2 mountainous island in Alaska's Alexander Archipelago; site of Sitka, former Russian-American capital, heavy glaciation, and Tlingit-Russian conflict of 1802 and 1804.

Block Island

Block Island (Manisses) is a 10-square-mile glacial moraine island and Rhode Island town about 10-12 miles offshore, settled in 1661, home to New Shoreham, the first US offshore wind farm (2016), and heavily conserved land.

Calvert Island

Calvert Island is an island on the Central Coast of British Columbia, Canada, west of the entrance to Rivers Inlet and home of the Hakai Institute's field station.

Canadian Atlantic Islands

Canadian Atlantic Islands is FEOW freshwater ecoregion 115, a Nearctic temperate coastal rivers unit covering Newfoundland, Prince Edward Island, Anticosti, the Magdalen Islands, and St. Pierre and Miquelon, with depauperate, saltwater-tolerant fish fauna and no known endemic species.

Cape Breton Island

Cape Breton Island (Unama'ki), northeastern Nova Scotia island of about 10,280 km2 joined to the mainland by the 1955 Canso causeway; home of Bras d'Or Lake UNESCO Biosphere Reserve, Mi'kmaq and Scottish Gaelic heritage, and Cape Breton Highlands National Park.

Channel Islands (California)

The California Channel Islands are eight islands off southern California; five form Channel Islands National Park (est. 1980), home to 145 endemic species, 13,000 years of Chumash habitation, and the recovered island fox.

Chichagof Island

Chichagof Island (Tlingit: Shee Kaax) is a mostly roadless island in the Alexander Archipelago of Southeast Alaska, one of the ABC islands, known for dense brown bear populations and its largest community, Hoonah.

Coats Island

Coats Island (Akpatuurjuaq) is a 5,498 km² uninhabited island in northern Hudson Bay, Nunavut, Canada, the largest uninhabited island in the northern hemisphere south of the Arctic Circle, known for thick-billed murre colonies, the Sadlermiut, and its seabird research station.