Hudson Bay (Inuktitut: Kangiqsualuk ilua, French: baie d'Hudson) (sometimes called Hudson's Bay, usually historically) is a large body of saltwater in northeastern Canada with a surface area of 1,230,000 square kilometres (470,000 sq mi). It drains a very large area, about 3,861,400 square kilometres (1,490,900 sq mi), that includes parts of Ontario, Quebec, Saskatchewan, Alberta, most of Manitoba, and southeastern Nunavut, and parts of North Dakota, South Dakota, Minnesota, and Montana. Hudson Bay's southern arm is called James Bay.
The Eastern Cree name for Hudson and James Bay is Wînipekw (Southern dialect) or Wînipâkw (Northern dialect), meaning muddy or brackish water. Lake Winnipeg is similarly named by the local Cree, as is the location for the city of Winnipeg.
The world's seas include the Mediterranean Sea (1), Red Sea (2), Black Sea (3), Caribbean Sea (4), Gulf of Mexico (5), Hudson Bay (6), Bering Sea (7), Tasman Sea (8), Coral Sea (9), Bay of Bengal (10), Arabian Sea (11), and North Sea (12).