Before revision: The largest seas in the Arctic Ocean: Barents Sea— 1.4 million km2 Hudson Bay— 1.23 million km2 (sometimes not included) Greenland Sea— 1.205 million km2 East Siberian Sea— 987,000 km2 Kara Sea— 926,000 km2 Laptev Sea— 662,000 km2 Chukchi Sea— 620,000 km2 Beaufort Sea— 476,000 km2 Amundsen Gulf— 93,000 km2 White Sea— 90,000 km2 Pechora Sea— 81,263 km2 Lincoln Sea— 64,000 km2 Prince Gustaf Adolf Sea Queen Victoria Sea Wandel Sea Different authorities put various marginal seas in either the Arctic Ocean or the Atlantic Ocean, including: Hudson Bay, Baffin Bay, the Norwegian Sea, and Hudson Strait.
After revision: The largest seas in the Arctic Ocean: Barents Sea— Hudson Bay— (sometimes not included) Greenland Sea— East Siberian Sea— Kara Sea— Laptev Sea— Chukchi Sea— Beaufort Sea— Amundsen Gulf— White Sea— Pechora Sea— Lincoln Sea— Prince Gustaf Adolf Sea Queen Victoria Sea Wandel Sea Different authorities put various marginal seas in either the Arctic Ocean or the Atlantic Ocean, including: Hudson Bay, Baffin Bay, the Norwegian Sea, and Hudson Strait.