Oxygen Depletion in the Baltic Sea (image) Aarhus University Caption When the oxygen content in the bottom water reaches a low point, the only survivors are ultimately bacteria that live on and in the seabed. Here the patches of white sulfur bacteria form a shroud. Credit Photo: Peter Bondo Christensen Usage Restrictions To be used only in relation to this news release 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.