Photo Ark three-part natural history series that follows National Geographic photographer Joel Sartore on his globetrotting quest to photograph some of the rarest animals in the world. These arresting, studio portraits of over 5,000 species go into the Photo Ark, Joel's 25-year-long project to document the world's animals before they go extinct. By looking these animals in the eye, we begin to care about them and understand their importance to the health of our planet. When we save these species, we're actually saving ourselves.