Off the southern coast of Australia, a group of western grey kangaroos enjoys life on the predator-free and aptly named Kangaroo Island. Further south lies Phillip Island, a refuge for the smallest species of penguin in the world. Journey to some of the animal world's more welcoming natural enclaves.

While seafaring elephant seals and tundra-traversing caribou are impressive travelers, monarch butterflies may be the most amazing migrators of all. Theirs is a cross-generational journey that involves laying their eggs en route, dying, and relying on offspring to finish the trip. Join us as we map their epic travels.