Blue Shark (IMAGE) University of California - Santa Barbara Caption Apex predators like this blue shark have an outsized influence on their ecosystems. Unfortunately, they’re also the hardest hit by fishing. Credit Neil Ferdinand Nathan Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.