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; ships
subject to superstructure icing in extreme northern Atlantic from
October to May; persistent fog can be a maritime hazard from May to
September; hurricanes (May to December)

Environment - current issues:
endangered marine species include the manatee, seals, sea lions,
turtles, and whales; drift net fishing is hastening the decline of
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

Geography - note:
major chokepoints 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

Economy Atlantic Ocean

Economy - overview:
The Atlantic Ocean provides some of the world's most heavily
trafficked sea routes, between and within the Eastern and Western
Hemispheres. Other economic activity includes the exploitation of
natural resources, e.g., fishing, dredging of aragonite sands (The
Bahamas), and production of crude oil and natural gas (Caribbean
Sea, Gulf of Mexico, and North Sea).

Transportation Atlantic Ocean

Ports and terminals:
Alexandria (Egypt), Algiers (Algeria), Antwerp (Belgium), Barcelona
(Spain), Buenos Aires (Argentina), Casablanca (Morocco), Colon
(Panama), Copenhagen (Denmark), Dakar (Senegal), Gdansk (Poland),
Hamburg (Germany), Helsinki (Finland), Las Palmas (Canary Islands,
Spain), Le Havre (France), Lisbon (Portugal), London (UK), Marseille
(France), Montevideo (Uruguay), Montreal (Canada), Naples (Italy),
New Orleans (US), New York (US), Oran (Algeria), Oslo (Norway),
Peiraiefs or Piraeus (Greece), Rio de Janeiro (Brazil), Rotterdam
(Netherlands), Saint Petersburg (Russia), Stockholm (Sweden)

Transportation - note:
Kiel Canal and Saint Lawrence Seaway are two important waterways;
significant domestic commercial and recreational use of Intracoastal
Waterway on central and south Atlantic seaboard and Gulf of Mexico
coast of US

Transnational Issues Atlantic Ocean

Disputes - international: some maritime disputes (see littoral states)