FromFlipperto SeaWorld, dolphins have long captured our hearts. We love these friendly, intelligent mammals, and they seem to return our feelings—they enjoy interacting with swimmers and have been known to encircle people under attack by sharks. Despite our familiarity with dolphins, though, we remain ill-informed about how they evolved, how they function, and how they have interacted with humans for millennia.Dolphindives into the dolphin’s zoology, as well as its social and cultural history, to offer a comprehensive view of these delightful creatures. Drawing on his years of experience working with and studying dolphins, Alan Rauch explores their propensity to live in pods and their ability to communicate through a variety of clicks, whistles, and other vocalizations. He examines their long relationship with humans, describing how they became the emblem of safe travel and charity, that the ancient Greeks featured them on coins, and that Hindu mythology associated them with Ganga, a river deity. As the rise in popularity of dolphinaria during the 1960s allowed the public access to dolphins, they became central characters in films likeThe Day of the DolphinandJohnny Mnemonicand outsmarted humans inThe Hitchhiker’s Guide to the Galaxy. Packed with images and thoughtful insights,Dolphinis a revealing look at one of our favorite sea creatures