A $7 Million Map of the Oceans

It’s an oceanographer’s favorite aphorism, that we know more about the surface of Mars than we do our own planet’s oceans. And, in many ways, it’s true. Based largely on a compilation of data from University of Southampton Professor of Marine Ecology Jon Copley (as well as other sources including HiRISE camera data and conversations with deep-sea scientists), we can see the distribution of spatial understanding in the figure below:

The numbers indicate that, from a topographic / b

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