Hudson Bay
an inland sea of British North America, between lat. 51° and 64° N., and lon. 77° and 95° W. Corinthian Gulf, Gulf of Boothia, and Fox Channel connect it with the Arctic Ocean on the N., and Hudson's Strait connects it with Davis Strait on the E. It covers an area of about 510,000 square miles, the S. part of which, embracing about one-fourth of the bay, is called James Bay. Hudson Bay is only navigable during a few months in the year. It was discovered by Henry Hudson.