The ocean is so deep, it puts the height of Mount Everest to shame. Plus how little of the ocean has been explored and the waves at Nazaré.

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How Deep Is the Ocean? — More Oceanography
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    How Deep Is the Ocean?

    How Deep Is the Ocean?

    To know the ocean is to know some mind-boggling numbers. About 71 percent of Earth's surface is covered by seawater. All that liquid takes up more …

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