The animal known for migrating the farthest distance annually is the Arctic tern. This remarkable bird undertakes one of the longest migrations of any animal, traveling about 71,000 kilometers (44,000 miles) each year. Arctic terns breed in the Arctic regions during summer and then migrate to the Antarctic for the winter. This incredible journey allows them to experience two summers annually, and their migration is not just an impressive feat of endurance but is also critical for their survival as it enables access to plentiful food sources in varying seasons.