6-year-old orca dies suddenly at SeaWorld San Diego

San Diego — A killer whale died unexpectedly at SeaWorld San Diego and the reason was not immediately known, the aquarium and theme park said Friday. The 6-year-old female orca named Amaya died Thursday and the cause of death will not be known until results of a post-mortem examination are complete, which could take weeks, SeaWorld's statement said.

"Amaya began showing signs of illness on August 18, and animal care specialists and veterinarians began treating her immediately. Despite her care team's efforts, Amaya's condition continued to decline rapidly. Her death was sudden and unexpected," it said. SeaWorld said the specialists who cared for Amaya were heartbroken.