The Arctic tern makes the longest migration of any animal on Earth. Each year it flies from the Arctic, where it breeds, all the way down to the Antarctic - and then back again.
That round trip zig-zags about 44,000 miles. Over a tern’s whole life, the distance it flies adds up to roughly three return trips to the Moon.
Because it chases summer at both ends of the planet, the Arctic tern sees more daylight than any other creature alive.
