Crustacean- Krill (IMAGE) University of South Florida Caption Krill is one of the species determined unable to handle further ocean deoxygenation. They're very important in the diets of fishes, squids and whales. Credit Stephani Gordon, Open Boat Films 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.