Ocean
/We know more about the surface of the moon than we do about the bottom of the ocean.
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…is about six miles deep at its deepest depth in the Pacific’s Mariana Trench. The pressure at that depth is eight tons per sq. inch. The pressure at Ocean’s average depth of fifteen thousand feet is about six tons per sq. inch. No wonder little more than five percent of the Ocean deep has been…
By K. L. Shipley
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