Gulf of Maine

From Academic Kids

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Gulf of Maine

The Gulf of Maine is a large gulf of the Atlantic Ocean on the northeastern coast of North America, roughly between Cape Cod in Massachusetts on the south and Cape Sable Island on the southern tip of Nova Scotia on the northeast. It includes the entire coastlines of the U.S. states of New Hampshire and Maine, as well as Massachusetts north of Cape Cod, and the southern and western coastlines of the Canadian provinces of New Brunswick and Nova Scotia respectively. Massachusetts Bay and the Bay of Fundy are included within the Gulf of Maine system. As such, the gulf is also home to the highest tidal variations on the planet (see Bay of Fundy for further information).

The coastline of the Gulf of Maine is predominantly rocky and scenic; the only significant coastal development is located in the Boston, Portsmouth, Portland and Saint John metropolitan areas. The effects of glaciation are responsible for stripping sedimentary soil away from the coastline, therefore the gulf lacks the sandy beaches found to the south along the Eastern Seaboard. The underwater features of the seabed sculptured during the lower sea levels of the ice ages make the gulf a semi-enclosed sea bounded to the south and east by underwater banks. Georges Bank in particular, on its southern end, protects the Gulf of Maine waters from the Gulf Stream. Gulf of Maine waters are more strongly influenced by the Labrador Current, making the gulf waters significantly colder and more nutrient-rich than those found to the south. Undersea valleys in the central basin can reach depths of 1,500 feet (500 meters) while undersea mountains rise up 800 feet (266 meters) from the sea floor, almost reaching the surface in some locations.

The watershed of the gulf encompasses an area of 69,115 miles² (179,008 km²), including all of Maine, 70 percent of New Hampshire, 56 percent of New Brunswick, 41 percent of Massachusetts, and 36 percent of Nova Scotia. The watershed also includes a small southern portion (less than 1 percent) of the Canadian province of Quebec. Significant rivers that drain into the gulf include, from east to west, the Annapolis, Shubenacadie, Salmon, Petitcodiac, St. John, Magaguadavic, St. Croix, Penobscot, Kennebec, Piscataqua and Merrimack rivers; the St. John and Penobscot having the greatest discharge.

The cold waters of the gulf make it one of the most productive marine environments in the North Atlantic, and it furnishes habitat for many diverese species including most notably the Atlantic herring (Clupea harengus) and the American lobster (Homarus americanus), which grows to famously large sizes in the gulf. The waters of the Gulf of Maine system, particularly at the boundary with the Bay of Fundy are also home to the summering grounds for many different whale species, most notably the highly endangered North Atlantic Right Whale.

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The gulf's relative proximity to Europe made it an early destination for European colonization. French settlers founded a settlement on St. Croix Island in 1604. English settlers founded the Popham Colony on an island in the Kennebec River in 1607, the same years as the Jamestown settlement, followed by the Plymouth Colony on the shores of Massachusetts Bay in 1620.

In the 1960s and 1970s Canada and the United States had a dispute over fishing and other resource rights in the Gulf of Maine, specifically the Georges Bank region. This dispute was taken to the International Court of Justice, which delineated a boundary through the gulf in 1984. Canada and the U.S. continue to dispute the sovereignty of Machias Seal Island and the waters surrounding it in the northeastern part of the gulf. In recognition of the gulf's importance to marine habitat, both nations currently maintain complementary embargos against offshore oil and gas exploration activities on Georges Bank in the southern part of the gulf.

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