Do We Really Know Less about the Deep Sea Than the Moon or Mars?

A new review of ocean data suggests that more than 99.999 percent of the global deep seafloor has never been seen by humans. But what does that really mean?

May 9, 2025 - 16:21
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Do We Really Know Less about the Deep Sea Than the Moon or Mars?

A new review of ocean data suggests that more than 99.999 percent of the global deep seafloor has never been seen by humans. But what does that really mean?