According to Pier 39's website, the sea lion population can increase up to 900, most of which are male. It's no surprise that we caught them barking, playing and at times appearing to fight on the K-Dock.
VIDEO: Sea Lions duke it out at Pier 39
The animals love hanging out there, especially in the sunshine.
The Sea Lion Center says a few California sea lions appeared at Pier 39 shortly after a 1989 earthquake in San Francisco. By January of 1990 they had taken over the K-Dock.
You can learn more about the world famous sea lions here.