Methanobacterium (IMAGE) University of Tennessee at Knoxville Caption This is a species of Methanobacterium, which produces methane. Found in samples from a buried coal bed 2 km below the Pacific Ocean floor off the coast of Japan, this specimen was retrieved during an Integrated Ocean Drilling Program (now the International Ocean Discovery Program) expedition in 2012 aboard the Drilling Vessel Chikyu. Bar represents 10 μm. Please note that a high-resolution version of this image is available by contacting images@jamstec.go.jp Credit Image courtesy of Hiroyuki Imachi (Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Japan). 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.