Only .001 percent of Earth's deep seafloor has ever been directly observed – Earth.com

  1. Only .001 percent of Earth’s deep seafloor has ever been directly observed  Earth.com
  2. Humans still haven’t seen 99.999% of the deep seafloor  NPR
  3. Do We Really Know Less about the Deep Sea Than the Moon or Mars?  Scientific American
  4. Over 99% of the…

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