If there are locals reading, does it seem like the sea lions on the California coast are getting more and more aggressive? This one looks mighty pissed, but perhaps he was just slammed across the trunk of that car by the man. The people carrying boards are from the Marine Mammal Center, where they eventually took this lad to serve his time in the drunk tank and settle down.
The boards themselves are called "herding boards" and I'm sure it was important to give a technical term to a piece of plywood with a handle.