Underwater Exploration: Fun Facts University of Wisconsin Sea Grant
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FUN FACT 1: What is the deepest spot in the oceans?

The greatest ocean descent was made in 1960 in the U.S. Navy bathyscape Trieste, manned by Dr. Jacques Piccard of Switzerland and Lt. Donald Walsh of the United States. In their vessel, these two men reached a depth of 35,979 feet at a place in the Pacific Ocean called the Mariana Trench, the deepest spot in the oceans and the lowest point of Earth's surface.

Compare that depth with the highest mountain peaks in the world. Do you think the land rises higher above sea level than it descends below sea level? Mount Everest in Nepal, at 29,002 feet, is the highest point in the world. The highest peak in North America is Mt. McKinley in Alaska at 20,320 feet.

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