The Juan Fernandez Fur Seal (Arctocephalus philippii) is a fur seal that breeds on the Juan Fernandez Islands off the coast of Chile. It is the second smallest of the pinnipeds (the closely-related Galapagos Fur Seal is smaller still). Having been discovered by navigator Juan Fernandez in the sixteenth century, the seals became a target for sealers in the seventeenth. There were thought extinct mid-way through the twentieth century until a population of 200 was found. The population has grown quickly. There are now believed to be at least 10,000 animals on and around the island.
References
Randall R. Reeves, Brent S. Stewart, Phillip J. Clapham and James A. Powell (2002). National Audubon Society Guide to Marine Mammals of the World. Alfred A. Knopf, Inc. ISBN 0375411410.