iliacbaby t1_iy68nez wrote
Reply to comment by Riegel_Haribo in TIL More than 80 percent of the ocean has never been mapped, explored, or even seen by humans and as a result, we know more about the surface of Mars than Earth by [deleted]
we didnt even discover hydrothermal vents until like the 1970s. there's a lot down there that we don't know about
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