Location: body of water between Africa, Antarctica, and the Western
Hemisphere
Map references: World
Area:
total area: 82.217 million sq km
comparative area: slightly less than nine times the size of the US;
second-largest of the world's four oceans (after the Pacific Ocean,
but larger than Indian Ocean or Arctic Ocean)
note: includes Baltic Sea, Black Sea, Caribbean Sea, Davis Strait,
Denmark Strait, Drake Passage, Gulf of Mexico, Mediterranean Sea,
North Sea, Norwegian Sea, Scotia Sea, Weddell Sea, and other tributary
water bodies
Coastline: 111,866 km
International disputes: some maritime disputes (see littoral states)
Climate: tropical cyclones (hurricanes) develop off the coast of
Africa near Cape Verde and move westward into the Caribbean Sea;
hurricanes can occur from May to December, but are most frequent from
August to November
Terrain: surface usually covered with sea ice in Labrador Sea, Denmark Strait, and Baltic Sea from October to June; clockwise warm water gyre (broad, circular system of currents) in the northern Atlantic, counterclockwise warm water gyre in the southern Atlantic; the ocean floor is dominated by the Mid-Atlantic Ridge, a rugged north-south centerline for the entire Atlantic basin; maximum depth is 8,605 meters in the Puerto Rico Trench
Natural resources: oil and gas fields, fish, marine mammals (seals and whales), sand and gravel aggregates, placer deposits, polymetallic nodules, precious stones
Environment:
current issues: endangered marine species include the manatee, seals,
sea lions, turtles, and whales; driftnet fishing is exacerbating
declining fish stocks and contributing to international disputes;
municipal sludge pollution off eastern US, southern Brazil, and
eastern Argentina; oil pollution in Caribbean Sea, Gulf of Mexico,
Lake Maracaibo, Mediterranean Sea, and North Sea; industrial waste and
municipal sewage pollution in Baltic Sea, North Sea, and Mediterranean
Sea
natural hazards: icebergs common in Davis Strait, Denmark Strait, and
the northwestern Atlantic Ocean from February to August and have been
spotted as far south as Bermuda and the Madeira Islands; icebergs from
Antarctica occur in the extreme southern Atlantic Ocean; ships subject
to superstructure icing in extreme northern Atlantic from October to
May and extreme southern Atlantic from May to October; persistent fog
can be a maritime hazard from May to September
international agreements: NA
Note: major choke points include the Dardanelles, Strait of Gibraltar,
access to the Panama and Suez Canals; strategic straits include the
Strait of Dover, Straits of Florida, Mona Passage, The Sound
(Oresund), and Windward Passage; the Equator divides the Atlantic
Ocean into the North Atlantic Ocean and South Atlantic Ocean