When Arctic waters get too cold, humpback whales migrate hundreds of miles south to look for a mate or to give birth. Then they travel back north again. Follow the incredible journey of a female humpback whale's migration from Alaska to the warm waters of Hawaii to give birth to a new calf in this narrative nonfiction picture book. Translated into North American Spanish.Author Lisa Amstutz and illustrator Howard Gray lend their scientific and creative expertise to this migration story, creating a book that will delight animal and nature lovers and support life science education. Includes a migration map, tips to protect animals and habitats, and a glossary.