A collection of favorite animals for newly confident readers.Meet the animals of the Arctic and Antarctic: from polar bears, the largest land predators on Earth, to emperor penguins, which waddle miles over the ice to balance eggs on their feet. Learn about record breakers of the ocean, such as blue whales, and record breakers of the skies, such as Arctic terns, which make longer migrations than any other animal. Signature Discover More photography and facts make this an essential guide to the most distant parts of our planet. The digital companion book features the story of a polar bear family surviving another year on the shrinking Arctic ice.Conoce a los animales que habitan las regiones polares. Este libro, con información actualizada y fotografías espectaculares, es una guía esencial para conocer las partes más alejadas de nuestro planeta. El libro digital que lo acompaña presenta la historia de una familia de osos polares que sobrevive un año más en el hielo cada vez más reducido del Ártico. Read Less