A passionate nature lover and a renowned artist trace the awe-inspiring spring migration of millions of creatures to the Arctic - the greatest journey on Earth.This is a book full of creatures: birds, fish and mammals. They are all embarking on one long, intense journey that will take them across oceans and continents, for thousands of miles - braving predators, starvation and extreme weather conditions - to reach the very top of the world. Each spring, animals migrate north to spend their summer in the snow-melt Arctic. In this season, the sun rarely sets and so millions of animals - of over 200 species - are drawn by the rich food sources and safe breeding grounds. The Arctic becomes a haven for new life. This adventure is the largest, most extraordinary migration in nature and one that is beautifully captured in Nick Dowson's lyrical narrative and Patrick Benson's stunning illustrations.