The animal known to have the longest migration is the Arctic Tern (Sterna paradisaea). These seabirds undertake an astonishing round-trip journey between their breeding grounds in the Arctic and their wintering areas in the Antarctic, covering distances of up to 71,000 kilometers (44,000 miles) each year. This migration is the longest of any animal, and the Arctic Tern experiences summer twice a year due to this journey, spending more time in daylight than any other creature. Their remarkable navigation abilities and endurance allow them to traverse vast oceans, making them a symbol of the incredible migrations found in the animal kingdom.