Deep-Sea Microbes (IMAGE) University of Delaware Caption Microbes found deeper in the ocean are believed to have slow population turnover rates and low amounts of available energy. However, microbial communities found deeper in seafloor sediments in and around hydrocarbon seepage sites have more energy available and higher population turnover rates than previously thought. Credit Graphic by Jeffrey C. Chase 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.