previously unknown seamounts less than 3,300 feet (1,000 meters) tall in the SWOT data. The data helped the team further refine maps of tectonic boundaries and ocean currents near coastal areas.

Of all Earth’s seamounts, marine biologists have studied only a few hundred. More finely detailed maps of the surface of Mars may exist than of the remotest parts of the ocean floor. Scientists ...

A newly-deployed satellite has created the most-detailed map yet of the ocean floor ... abyssal hills, small seamounts and continental margins. Abyssal hills — parallel ridges that are just ...