Dr. Mate has been a pioneer in the use of satellites to track tagged whales over his last two decades of research that has yielded a wealth of information about the animals’ migration routes between feeding and calving areas, as well as their overall behavior. Mate's work is important because it shows how whales migrate in close proximity to human activities and how their feeding areas have changed in recent years in response to warming in the Bering Sea. Levi and Brock talk to Dr. Mate about the science of whale migration.