The competition

We've seen some thin yearling sucklings but it is the time where they learn to find food on their own and not rely on Mom. As they do so, young sea lions will quickly find out that pelicans are direct competitors for the same small fish that are sea lion favorites. 
The average life span of a California Sea Lion is 20–25 years.
Sea Lions are considered “opportunistic feeders,” eating available prey rather than one species.