A team of scientists has documented the longest migration of a mammal ever recorded — a round-trip trek of nearly 14,000 miles by a whale identified as a critically endangered species that raises questions about its status as a distinct species.
A team of scientists has documented the longest migration of a mammal ever recorded — a round-trip trek of nearly 14,000 miles by a whale identified as a critically endangered species that raises questions about its status as a distinct species.