Hawaiian Monk Seal
The Hawaiian monk seal's Hawaiian name translates to "dog that runs in rough water." The seal is the only seal native to Hawaii, and it is now an endangered species.
Elephant seals, seen here on the Farallon Islands off the coast of California, live in harems, with one male mating with many females.
An Antarctic Weddell seal comes up for air at a breathing hole. Weddell seals can stay submerged for more than an hour
Weddell seals haul out on ice to give birth and suckle their young. This pup takes a break from feeding to pose for the camera.