Cover Image krill spp 2 (IMAGE) University of South Florida Caption Krill, shrimp-like crustaceans, provide a major food source for many marine animals – from fish to whales. Credit: Stephani Gordon, Open Boat Films Credit Stephani Gordon, Open Boat Films Usage Restrictions NA License Original 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.