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Pacific Ocean

Pacific Ocean

Largest ocean on earth

The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south and is bounded by the continents of Asia and Australia in the west and the Americas in the east.

At 165,250,000 square kilometers (63,800,000 square miles) in area (as defined with a southern Antarctic border), this largest division of the World Ocean—and, in turn, the hydrosphere—covers about 46% of Earth's water surface and about 32% of its total surface area, larger than all of Earth's land area combined (148,000,000 km2 [57,000,000 sq mi]). The centers of both the Water Hemisphere and the Western Hemisphere are in the Pacific Ocean. Ocean circulation (caused by the Coriolis effect) subdivides it[citation needed] into two largely independent volumes of water, which meet at the equator: the North(ern) Pacific Ocean and South(ern) Pacific Ocean. The Galápagos and Gilbert Islands, while straddling the equator, are deemed wholly within the South Pacific.

Its mean depth is 4,000 meters (13,000 feet). Challenger Deep in the Mariana Trench, located in the western north Pacific, is the deepest point in the world, reaching a depth of 10,928 meters (35,853 feet). The Pacific also contains the deepest point in the Southern Hemisphere, the Horizon Deep in the Tonga Trench, at 10,823 meters (35,509 feet). The third deepest point on Earth, the Sirena Deep, is also located in the Mariana Trench.

The western Pacific has many major marginal seas, including but not limited to the South China Sea, the East China Sea, the Sea of Japan, the Sea of Okhotsk, the Philippine Sea, the Coral Sea, Java Sea and the Tasman Sea.


Further Resources


Ocean of destiny : a concise history of the North Pacific, 1500-1978 : Lower, J. Arthur, 1907- : Free Download, Borrow, and Streaming : Internet Archive



The greatest depths; probing the seas to 20,000 feet and below : Soule, Gardner : Free Download, Borrow, and Streaming : Internet Archive




November 2, 2021
BOGOTA, Colombia (AP) -- Four Latin American countries announced Tuesday that they will expand and unite their marine reserves to create a vast corridor in the Pacific Ocean in hopes of protecting sea turtles, tuna, squid, hammerhead sharks and other species.
September 3, 2021
VANDENBERG SPACE FORCE BASE, Calif. (AP) - A privately designed, unmanned rocket built...
The Associated Press
September 3, 2021
ABC News
A privately designed, unmanned rocket built to carry satellites into orbit exploded in a fireball off the California coast
Tom Cassauwers
August 12, 2021
Potato-sized clumps of metal at the bottom of the deepest oceans might aid our fight against climate change, but mining these could also damage a world we know very little about.
Science X staff
August 6, 2021
Earthquakes shake and rattle the world every day. The U.S. Geological Survey (USGS) has estimated the number of earthquakes at some half a million a year, with some 100,000 that can be felt, and about 100 that cause damage. Some of these powerful temblors have devastated nations, cutting short thousands of lives and costing billions of dollars for economic recovery.
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