3 ms·

Maps

• jeffwass 5y ago
  From the CNN article : When it comes to knowing the terrain beneath them, even astronauts might have it easier than submariners, according to Shugart. "Basically, the surface of the moon is better charted than the bottom of the ocean is," he said.
• pas 5y ago
  The seafloor is not mapped 100% to a sufficient resolution. Underwater navigation is not that simple (no GPS). Plus even if this big underwater mountain were on a map, maps are not perfect.