Sparky V stopped performing at the Como Park Zoo & Conservatory in 2001, but trainers there continued to work with him daily until he died Monday.
The zoo says the average life expectancy of a sea lion in 15 to 25 years. Trainers credit Sparky V's longevity to a special diet and prompt medical care.
As a performer, Sparky V played a lifeguard, trumpet player, baseball player and lounge singer.
