Why is the Hudson Bay called a bay and not a sea?

Question

Why is the Hudson Bay called a bay and not a sea?

In: Planetary Science

Answer 1

In general, a bay is closed in on 3 sides, while a sea is mostly closed in on all sides. Hudson’s Bay is largely closed in on 3 sides by mainland Canada. While the arctic archipelago does get in the way of its opening to the larger ocean, it’s still fairly open to sail out of (when it isn’t iced over).