High Tide in Hawaii by Mary Pope Osborne

Jack and Annie travel to ancient Hawaii and learn how to surf, dance the hula, and respect the natural world. When a tsunami threatens the island, they must warn their new friends and reach safety in time. Their quick actions and growing understanding of Hawaiian culture help them fulfill their mission. The story is both exciting and informative, with a strong environmental theme. It ends their magical journey with friendship, courage, and aloha spirit.