Why is it so hard to map the ocean floor? | The Economist
April 28, 2026
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2:20Now PlayingWhy is it so hard to map the ocean floor? | The Economist
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as posted by the channelHumans know more about the surface of Mars than Earth’s ocean floor. Only 27% of the seabed has been mapped—the rest is still an estimate. Why is the ocean floor so hard to chart?
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