Colleagues, Oceansis a new, multidisciplinary, peer-reviewed open access journal (ISSN 2673-1924). As part of its inaugural year, Oceans will publish several special issues, including a special issue on “Marine Mammals in a Changing World.” For more information, please see:https://www.mdpi.com/journal/oceans/special_issues/marine_mammals Submitted manuscripts will undergo rigorous peer review. Due to issues related to the global pandemic, the deadline for submissions has now been EXTENDED TO JANUARY 31, 2021. There is no publication fee; the normal article processing charge will be waived. Contributions for this special issue are invited in all areas of marine mammal research, especially those that focus on one (or both) of two themes: changing technological advances and changes in ocean habitats affecting marine mammals (including but not limited to changes in climate/temperature; ocean acidification; noise, plastic, or chemical pollution; vessel traffic and ship strikes; pathogenic viruses and microbes; trophic changes; fisheries impacts; habitat destruction; and related topics). Submissions can focus on any area of marine mammal research and health, including but not limited to ecology, conservation, population biology and management, behavior, habitat and distribution, genetics, evolution, physiology, anatomy, acoustics, effects of noise and pollution, and new technologies. Please share this information with your colleagues and don’t hesitate to contact me if you have any questions. Thanks and best regards, Alex Werth _______________________________ Alexander J. Werth, Ph.D. Trinkle Professor of Biology Hampden-Sydney College Box 162, Hampden-Sydney, VA 23943 USA 434-223-6326, fax 434-223-6374 http://www.hsc.edu/alex-werth