Canada has the longest coastlines of any country in the world (60 180 km excluding islands, 202 080 including all measurable islands). Canadian coastal waters support valuable biological resources (eg, fish, crustaceans, molluscs, marine mammals and seaweeds) and are important for transportation, recreation and the mineral and hydrocarbon resources in the seafloor beneath them.
Gulf of St Lawrence, a large (250 000 km2), roughly triangular inland sea receiving on average 10 100 m3/s of fresh water from the St Lawrence River at its northwest apex, is connected to the Atlantic by the Strait of Belle Isle at the northeast and Cabot Strait at the southeast corners.
Chignecto Bay, northeastern arm of the Bay of Fundy. The name comes from the Indigenous word sigunikt, usually said to mean "foot cloth," perhaps from a Mi'kmaq legend. The area around present-day Sackville, NB, was first settled by Acadians in 1671 and by Yorkshire Methodists about 100 years later.
Circulation is generally anticlockwise; off Greenland, relatively warm, salty water moves north, while along Baffin Island, cold, fresher water originating from the Arctic Ocean flows south. Icebergs, formed by calving off the Greenland glaciers, appear year-round, but are most numerous in August.