Daphnia (IMAGE) Cary Institute of Ecosystem Studies Caption When algae are scarce, Daphnia will feed on bits of leaves that wash in from the watershed. Credit Paul Hebert 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.