Seawater Samples (IMAGE) Princeton University Caption Researchers added specific amounts and types of nitrogen and organic compounds to test tubes containing seawater, and then noted whether denitrification or anammox occurred. Credit Photo courtesy of Andrew Babbin 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.