Xoc explores the ocean's wonders through the eyes of a greatwhite as it treks from the Farallon Islands off the coast of California to thewarm waters of Hawaii some 2,300 miles away. Along its journey, the 17-footshark encounters natural prey and predators -- from skittish seals tobrazen orcas -- as well as man-made impediments that threaten not only thegiant fish, but the balance of ocean's ecology.