An advanced study of marine mammals has been provided in this profound book. The specialized features of marine mammals in comparison with their terrestrial counterparts, the environment in which they live, and the effect of humans on them throughout history and in the present day scenario have all given a distinctive dimension to research on these creatures. Therefore, several researchers have undertaken unique approaches for their study. The aim of this book is to provide an overview on the diversity of approaches and viewpoints along with providing useful information on marine mammalogy. Given the growing concerns about issues of anthropogenic factors affecting these animals, it is apparent that a major part of this book deals with this issue.