Here are methane gas bubbles rise from the seafloor. These bubbles were originally noticed by NOAA Ship Okeanos Explorer in 2012. On May 8, 2013, the NOAA ship Ron Brown returned to the area to ... more 
Here are methane gas bubbles rise from the seafloor. These bubbles were originally noticed by NOAA Ship Okeanos Explorer in 2012. On May 8, 2013, the NOAA ship Ron Brown returned to the area to further investigate. less 
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LiveScience.com | Photo By NOAA-OER/BOEM/USGS
Tue, Dec 10, 2013 10:20 AM EST