Humpback whale swimming 

 underwater. (Photograph from 

 Gulf of the Farallones 

 National Marine Sanctuary.) *- 



Pacific white-sided dolphin 

 (above) and northern right-whale 

 dolphin (below) swimming under- 

 water. (Photograph courtesy of 

 Ken Balcomb.) T 



Adult females and immature northern ele- 

 phant seals at Southeast Farallon Island. 

 Inset shows the characteristic nose of an 

 adult male. (Photographs from Gulf of the 

 Farallones National Marine Sanctuary.)*- 



50 Biology and Ecological Niches in the Gulf of the Farallones 



