Only five percent of the seafloor has been topographically imaged, which leaves 65 percent of the entire planet (not counting land masses) relatively unknown. Yet, since the dawn of space exploration, NASA has thoroughly mapped Mercury, the dwarf planet Ceres, almost all of Venus, and even the Red Planet, some 140 million miles away. And don’t forget the stunningly detailed satellite images of the Moon’s every nook and cranny. High resolution topographic map of Mars. Image: NASA/JPL/USGS
But now, an international group of marine experts at the General Bathymetric Chart of the Oceans
(GEBCO), an oceanographic organization founded in 1903, says it wants nothing more than to see future marine exploration on par with the space race.

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