Inspired by an encounter with a pod of spinner dolphins off the coast of Maui, author Susan Casey embarked on a two-year global adventure to study these remarkable beings. Casey details the extraordinary connection between dolphins and humans, including shared characteristics such as capacity for emotion, playfulness, sociability, and intelligence, the sophisticated navigation ability innate in dolphins, and the dangers they face from people who aim to profit by putting them in captivity or far worse. Includes an 8-page photo insert that offers a glimpse of these magical creatures in their natural habitat.