A hydrothermal vent system (IMAGE) Tokyo Institute of Technology Caption The most heat-tolerant methanogens were found at a deep-sea hydrothermal vent site Credit NOAA Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC 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.