How does a tiny finch get to barren islands in the Pacific and over millions of years, evolve into one of the most fascinating groups of birds on Earth? Dry, harsh and unforgiving, the Galapagos Islands are home to a unique assemblage of animals - land and marine iguanas, giant turtles and finches that peck the skin of seabirds before drinking their blood. Follow a year in the lives of these creatures and discover the forces of nature that created them.