The northern fur seal spends most of its life in the open ocean of the North Pacific, from California up through Alaska and down to Japan. These seals travel hundreds of miles, farther than any other seal or sea lion, to reach their remote breeding grounds. Most fur seals go to the Pribilof Islands of Alaska, where, historically, several million fur seals converged annually, but the population counted in the Pribilofs in 2008 was less than one...