NOAA Ship Okeanos Explorer: Mendocino Ridge Mapping Shakedown Cruise, May 5-26, 2009

Data from the multibeam sonar on the NOAA Ship Okeanos Explorer provided a 3D image of an underwater gas plume rising 4,600 feet from the seafloor off the California Coast in 2009. Video Credit: NOAA Office of Ocean Exploration and Research.

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