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Cabot Strait, the passage between southwest Newfoundland and Cape Breton Island. Named for explorer John Cabot, it is 110 km wide between Cape Ray, Nfld, and Cape North, NS.

The Beaufort Sea coast is low lying and subject to considerable scouring by ice and erosion by storm surges. The Canadian shelf and the Yukon/Alaskan shelf form the southern boundary of the Beaufort Sea, but they have significantly different widths and alignments.

Georges Bank is a large submarine bank (250 km by 150 km) at the edge of the Atlantic continental shelf between Cape Cod and Nova Scotia. Typical water depths are 50-80 m, but in some areas the water shoals to 10 m and less.

The interplay of these ocean waters with freshwater runoff from land creates the conditions that support large biological production on Canada's continental shelves and embayments (see COASTAL LANDFORM; DRAINAGE BASIN).

Between about 15 000 and 10 000 years ago, as the glaciers retreated from the last ice age, parts of Georges Bank and other shallow areas were dry land; fragments of trees and mammoth teeth from this era are still found occasionally in fishing trawls.