* At 39 degrees Fahrenheit, the temperature of almost all of the deep ocean is only a few degrees above freezing. *
* In 1958, the United States Coast Guard icebreaker East Wind measured the world's tallest known iceberg off western Greenland. At 550 feet it was only 5 feet 6 inches shorter than the Washington Monument in Washington, D.C. *
* If the ocean's total salt content were dried, it would cover the continents to a depth of 5 feet. *
* Undersea earthquakes and other disturbances cause tsunamis, or great waves. The largest recorded tsunami measured 210 feet above sea level when it reached Siberia's Kamchatka Peninsula in 1737. *
* The Antarctic Ice Sheet is almost twice the size of the United States. *
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