Image 1 (IMAGE) Aarhus University Caption In the laboratory, cable bacteria were placed in a little, transparent chamber. In the middle, the bacteria had access to oxygen-free mud stuffed with food, while oxygen diffused in from the edges. Credit Photo: Maria Blach Nielsen Usage Restrictions May be used in relation with this news release. 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.