Whale shark (IMAGE) Smithsonian Tropical Research Institute Caption The largest fish in the ocean, the whale shark, is a highly migratory endangered species that may require conservation programs focused on protecting large ocean areas and establishing marine corridors that transcend national borders. Credit Candy Real, Smithsonian Tropical Research Institute Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms. License CC BY-NC-SA 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.