"An up-to-date account of the social lives of whales and dolphins, one that benefits from new technologies such as digital photography, drones and biologging, as well as genomics, Bayesian statistics and more. . . . A rich overview. . . . While many chapters review particular topics or species, in others whale or dolphins are used as a model to explore broader concepts in social evolution. Ultimately, this book is not just for those researching marine mammals; it will be useful for those studying primates where parallels abound, as well as those broadly interested in social evolution."