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Pacific Ocean
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The Pacific Ocean is the largest of the Earth's oceans. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.

At 165.2 million square kilometres (63.8 million square miles) in area, it covers about 46% of the Earth's water surface and about one-third of its total surface area, making it larger than all of the Earth's land area combined.

Extending approximately 15,500 kilometres (9,600 mi) from the Bering Sea in the Arctic to the northern extent of the circumpolar Southern Ocean at 60° S, the Pacific reaches its greatest east-west width at about 5°N latitude, where it stretches approximately 19,800 kilometres (12,300 mi) from Indonesia to the coast of Colombia and Peru – halfway across the world, and more than five times the diameter of the Moon.

The Pacific Ocean's lowest known point, and the lowest on earth, is the Mariana Trench to the east of the Mariana Island. It is 10,911 metres (35,797 ft) below sea level. The Pacific Ocean's average depth is 4,188metres (14,000 ft).

The Pacific Ocean is currently shrinking due to plate tectonics, while the Atlantic Ocean is increasing in size, by roughly an inch per year (2–3 cm/yr) on 3 sides, roughly averaging 0.2 square miles (0.5 km2) a year.

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