Is the Hudson Bay freshwater or saltwater?
It is saltwater, but the salinity levels are lower than the oceans. Hudson Bay is connected to the Atlantic by some narrow straits, this keeps circulation down. Hudson Bay is fed by many rivers — a lot of freshwater flows into it. And finally, the bay is ice covered for approximately six months per year. This keeps the evaporation rate down. (Evaporation is what causes the Great Salt Lake and the Dead Sea to be so salty.