Mud Volcano Bacteria (IMAGE) Max-Planck-Gesellschaft Caption The majority of gas emanates from the middle of the mud volcano (left). Bacteria of the species Beggiatoa settle in the central regions (middle). Tubeworms thrive around the edges (right). Credit Image: IFREMER 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.