The author of The Book of Sharks, Imagining Atlantis, and Encyclopedia of the Sea turns his gaze to the tuna--one of the biggest, fastest, and most highly evolved marine animals and the source of some of the world's most popular delicacies--now hovering on the brink of extinction. In recent years, the tuna's place on our palates has come under scrutiny, as we grow increasingly aware of our own health and the health of our planet. Here, Ellis explains how a fish that was once able to thrive has become a commodity, in a book that shows how the natural world and the global economy converge on our plates.--From publisher description.