Gulf of St. Lawrence

The Gulf of St. Lawrence is Planet Earth's largest estuary. It is roughly triangular in shape, with Quebec City at the western apex, where the St Lawrence River empties into the Gulf.

Cape Breton Island and the Island of Newfoudland form part of its eastern, Atlantic Ocean end.

Shoals are found in much of Gulf, and several islands form navigational hazards. Nevertheless, the Gulf is a busy maritime shipping corridor. In addition to Quebec City, Bathurst, New Brunswick and Sydney, Nova Scotia, are important ports on the Gulf.

Two large islands, slightly smaller than Puerto Rico are found in the Gulf. Prince Edward Island, near the south shore, is a relatively low-lying island with a fertile soil, with an unusual red colour. Anticosti Island, off the north shore, is very lightly settled, woody Island, and is part of the northernmost extensions of the Appalachian mountains.