Dear Colleagues, we wish to bring to your attention the appearance of the book: Marine Mammals: the Evolving Human Factor, published by Springer Nature and available on https://link.springer.com/book/10.1007/978-3-030-98100-6 <https://link.springer.com/book/10.1007/978-3-030-98100-6> The seventh volume in the series “Ethology and Behavioral Ecology of Marine Mammals” describes aspects of the often-complex relationship between humans and marine mammals. From a primeval condition of occasional predators, during the last century humans have become a major factor negatively affecting the status of most marine mammals through over-hunting, habitat encroachment and environmental degradation. This has led to the extirpation of many marine mammal populations and even to the extinction of species. However, in parallel to this destructive drive, since antiquity humanity has been influenced by a strong fascination for marine mammals, which contributes today to an increased human appreciation of the natural world admixed with widespread concern for its degrading condition. The special status occupied by marine mammals in human imagination and affection stands in stark contrast with the current predicament of many populations still threatened by the doings of Homo sapiens: a condition emblematic of the relationship of humanity with nature, and key to understanding where humanity is heading. Table of contents: Randall R. Reeves: Cetacean Conservation and Management Strategies Erich Hoyt: Conserving Marine Mammal Spaces and Habitats Philippa Brakes, Luke Rendell: Conservation Relevance of Individuals and Societies Lori Marino: Cetacean Brain, Cognition, and Social Complexity Ryan R. Reisinger, Chris Johnson, Ari S. Friedlaender: Marine Mammal Movement Ecology in a Conservation and Management Context Peter Corkeron: Marine Mammal Captivity, an Evolving Issue E. C. M. Parsons, N. A. Rose: The History of Cetacean Hunting and Changing Attitudes to Whales and Dolphins Lars Bejder, James E. S. Higham, David Lusseau: Tourism and Research Impacts on Marine Mammals: A Bold Future Informed by Research and Technology Melissa Collier, Janet Mann, Sania Ali, Shweta Bansal: Impacts of Human Disturbance in Marine Mammals: Do Behavioral Changes Translate to Disease Consequences? Mark P. Simmonds, Laetitia Nunny: Marine Mammals Seeking Human Company Helene Marsh, Luis Ahuanari, Valentina del Aguila, Bradford Haami, Mauricio Laureano, Frank Loban et al.: Elders’ Voices: Examples of Contemporary Indigenous Knowledge of Marine Mammals Lori Marino, Thomas I. White: Cetacean Personhood, Rights, and Flourishing Claudio Campagna, Daniel Guevara: “Save the Whales” for Their Natural Goodness Giuseppe Notarbartolo di Sciara, Bernd Würsig: Helping Marine Mammals Cope with Humans Cheers, Giuseppe Notarbartolo di Sciara and Bernd Würsig