Their thick blubber layer and specialized adaptations for diving make them well-suited for life in the Arctic Ocean. Caribou/Reindeer: These migratory animals are known for their impressive ...
(Photo by Kyle Joly/National Park Service) The Western Arctic Caribou Herd, once the biggest in Alaska, is faltering, having fallen from a high of 490,000 animals in 2003 to only 152,000 as of 2023.