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Looks like this would be perfect for google earth.
The ocean floor is one of the most mysterious, least explored places on planet Earth. Nearly 90 percent of it still unmapped.
New ocean floor data reveals previously hidden mountains and volcanoes.
Using data from satellites that measure variations in Earth’s gravitational field, the researchers found a new, more accurate way to map the ocean floor.
They were able to identify a variety of previously unknown features—including thousands of extinct volcanoes more than 1000 meters tall.
originally posted by: Ceeker63
The gravity mapping of the seafloor is interesting. However, for my point of view, a topographic map would have been a better article to read.