Statistical information Pacific Ocean 1992

165,384,000 km²; includes Arafura Sea, Banda Sea,
Bellingshausen Sea, Bering Sea, Bering Strait, Coral Sea, East China Sea,
Gulf of Alaska, Makassar Strait, Philippine Sea, Ross Sea, Sea of Japan, Sea of Okhotsk, South China Sea, Tasman Sea, and other tributary water bodies

slightly less than 18 times the size of the US; the largest ocean (followed by the Atlantic Ocean, the Indian Ocean, and the
Arctic Ocean); covers about one-third of the global surface; larger than the total land area of the world

surface in the northern Pacific dominated by a clockwise, warm-water gyre (broad, circular system of currents) and in the southern
Pacific by a counterclockwise, cool-water gyre; sea ice occurs in the Bering
Sea and Sea of Okhotsk during winter and reaches maximum northern extent from Antarctica in October; the ocean floor in the eastern Pacific is dominated by the East Pacific Rise, while the western Pacific is dissected by deep trenches; the world's greatest depth is 10,924 meters in the
Marianas Trench

endangered marine species include the dugong, sea lion, sea otter, seals, turtles, and whales; oil pollution in Philippine Sea and South
China Sea; dotted with low coral islands and rugged volcanic islands in the southwestern Pacific Ocean; subject to tropical cyclones (typhoons) in southeast and east Asia from May to December (most frequent from July to
October); tropical cyclones (hurricanes) may form south of Mexico and strike
Central America and Mexico from June to October (most common in August and
September); southern shipping lanes subject to icebergs from Antarctica; occasional El Nino phenomenon occurs off the coast of Peru when the trade winds slacken and the warm Equatorial Countercurrent moves south, killing the plankton that is the primary food source for anchovies; consequently, the anchovies move to better feeding grounds, causing resident marine birds to starve by the thousands because of their lost food source

the major choke points are the Bering Strait, Panama Canal, Luzon
Strait, and the Singapore Strait; the Equator divides the Pacific Ocean into the North Pacific Ocean and the South Pacific Ocean; ships subject to superstructure icing in extreme north from October to May and in extreme south from May to October; persistent fog in the northern Pacific from June to December is a hazard to shipping; surrounded by a zone of violent volcanic and earthquake activity sometimes referred to as the Pacific Ring of Fire

The Pacific Ocean is a major contributor to the world economy and particularly to those nations its waters directly touch. It provides cheap sea transportation between East and West, extensive fishing grounds, offshore oil and gas fields, minerals, and sand and gravel for the construction industry. In 1985 over half (54%) of the world's total fish catch came from the Pacific Ocean, which is the only ocean where the fish catch has increased every year since 1978. Exploitation of offshore oil and gas reserves is playing an ever-increasing role in the energy supplies of
Australia, New Zealand, China, US, and Peru. The high cost of recovering offshore oil and gas, combined with the wide swings in world prices for oil since 1985, has slowed but not stopped new drillings.