The Mid-Atlantic Ridge Is a Huge Underwater Mountain Range
Running roughly 16,000 kilometers, the ridge marks where tectonic plates are pulling apart, widening the ocean by a few centimeters each year.
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The Gulf Stream Carries Warm Water Across the Atlantic
This powerful current flows from the Gulf of Mexico toward Europe and helps keep the climate of Western Europe milder than its latitude suggests.
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The Titanic Sank in the North Atlantic in 1912
The wreck was found in 1985 at a depth of about 3,800 meters, roughly 600 kilometers off Newfoundland.
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The Sargasso Sea Is a Sea Without Any Coastline
Bounded by ocean currents instead of land, the Sargasso Sea is named for the floating Sargassum seaweed that gathers there.
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The Atlantic Is the Second-Largest Ocean and Covers About 20% of Earth's Surface
Only the Pacific is bigger. The Atlantic stretches from the Arctic in the north to the Southern Ocean in the south.