The Gulf of Maine is a large gulf of the Atlantic Ocean on the east coast of North America.It is bounded by Cape Cod at the eastern tip of Massachusetts in the southwest and by Cape Sable Island at the southern tip of Nova Scotia in the northeast. The gulf includes the entire coastlines of the U.S. states of New Hampshire and Maine, as well as Massachusetts north of Cape Cod, …

The Gulf of St. Lawrence (French: Golfe du Saint-Laurent) is the outlet of the North American Great Lakes via the St. Lawrence River into the Atlantic Ocean.The gulf is a semi-enclosed sea, covering an area of about 226,000 square kilometres (87,000 sq mi) and containing about 34,500 cubic kilometres (8,300 cu mi) of water, at an average depth of 152 metres (500 ft).