Groundwater discharges to the ocean (IMAGE) University of Gothenburg Caption Groundwater discharge can drive nitrogen in coastal waters. In the picture, researchers are walking on groundwater discharging to the ocean at low tide. Credit Isaac Santos 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.