Not catastrophically though, and "largely underwater" seems incorrect, especially since the land around Hudson Bay is part of the Canadian shield, with only a t

Not catastrophically though, and "largely underwater" seems incorrect, especially since the land around Hudson Bay is part of the Canadian shield, with only a thin layer of dirt over rock [1]. Even if all polar ice melted, and the sea rose 70m [2], it looks like Hudson Bay would only increase in area by ~20%: https://www.floodmap.net/?ll=62.144976,-87.451172&z=4&e=70 https://www.floodmap.net/?ll=62.144976,-87.451172&z=4&e=70 By contrast, practically all of Florida would be gone with that rise. [1] https://en.wikipedia.org/wiki/Canadian_Shield https://en.wikipedia.org/wiki/Canadian_Shield [2] https://www.usgs.gov/faqs/how-would-sea-level-change-if-all-glaciers-melted?qt-news_science_products=0#qt-news_science_products https://www.usgs.gov/faqs/how-would-sea-level-change-if-all-...