Join Lehua and Kai as they voyage on a research ship following the annual migration of humpback whales. These young scientific helpers document the adventure of the humpbacks as they begin their trek from the feeding grounds of Alaska and cruise to the warm waters of Hawai'i to give birth to their calves. The story is told as Lehua and Kai write letters to their whale-loving friends of all they have learned about the great sea mammals. Packed with educational facts, children will love learning all about whales and other sea creatures as they make their southern journey across the Pacific Ocean.