Last week Illustra Media offered up the first video in a two-part series on animal migration. Part I, which you can watch here, featured the amazing ability of the Pacific salmon to return after a two-year hiatus in the mid-ocean to the very stream in which it spawned.
Today's 8 minute follow-up looks at the equally amazing ability of the Arctic tern to make an annual non-stop migration from the Arctic circle to Antartica over the Atlantic ocean and then back again.
It's an astonishing feat and one that points to an intelligent design of these fascinating birds. Take a look: