Several Origins of Methane on Earth (IMAGE) Terry Collins Assoc Caption Abiotic sources of methane have been found in more than 20 countries and in several deep ocean regions so far. http://bit.ly/2Pa1oiV Credit Deep Carbon Observatory Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.