What body of water curves around the Canadian shield?

The body of water that curves around the Canadian Shield is Hudson Bay. This large inland sea is bordered by several provinces and territories in Canada, including Manitoba, Ontario, Quebec, and Nunavut. The Canadian Shield itself is a vast geological region characterized by exposed Precambrian rock, and it plays a significant role in shaping the surrounding landscape and hydrology. Hudson Bay serves as an important ecological and economic resource for the region.