A live 10-foot basking shark washed ashore in Long Beach but died shortly afterward, Long Beach City police said.
The shark was found between New York and Pennsylvania avenues by a city lifeguard just before 3:20 p.m., police said.
Lt. Eric Cregeen said swimmers and beachgoers should not be concerned about basking sharks in the waters.
"They eat krill and that kind of stuff," he said. "They're not man-eaters."
The shark did not appear to have any obvious signs of injuries, so it may have been sick, Cregeen said.
It was still on the beach late Wednesday afternoon as city officials mulled what to do with the body.
Cregeen said it may be buried on the beach.
It's not unusual for a basking shark to be injured, he said, because, as its name implies, the creature likes to bask in the sun near the surface of the water.