Blue Whale Feeding 2 (IMAGE) Smithsonian Caption A blue whale, the largest vertebrate animal ever in the history of life, engulfs krill off the coast of California. Photograph authorized under National Marine Fisheries Service permit #16111 for the BBC program 'The Hunt,' courtesy of Hugh Pearson and David Reichert. Credit Copyright Silverback Films/BBC. Usage Restrictions News media use of the image files with credit information in relation to the publication in <i>Proceedings of the Royal Society B</i> is permitted. 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.