Deep Discoverer encountered several of these depressions or potmarks that are likley associated with the release of methane from the seafloor.

Deep Discoverer encountered several of these depressions or pockmarks that are likely associated with the release of methane from the seafloor. Image courtesy of the NOAA Office of Ocean Exploration and Research, Gulf of Mexico 2017.

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Daily Updates: December 20

Gulf of Mexico 2017

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