Along with 13 species of breeding birds, the Farallones are used as a haul out and pupping site for 5 species of Pinnipeds. For those of you unfamiliar with the term, Pinnipeds are the "fin-footed" marine mammals, a taxonomic distinction that describes all of the seals, sea lions, and walrus. Northern Elephant Seals, Fur Seals, Steller Sea Lions, California Sea Lions, and Harbor Seals can all be seen in various numbers and reproductive stages on the island throughout the the year. They offer a visual reprieve from many hours of waiting for birds to stand off their nests and reveal what's brooding underneath. These two massive adult male Steller Sea Lions were occupying the same territory, and likely had just finished an epic battle that must have ended in a stalemate. True Chewbaccas of the sea.