Bubbles the pilot whale, the oldest whale in any zoological park, died on Thursday, SeaWorld San Diego announced.
Bubbles, who had been at San Diego’s park for 30 years, was in her early- to mid-50s, park officials said.
She came to SeaWorld in the late 1980s and participated in countless shows at Dolphin Stadium along with dolphins and other pilot whales.
Park officials estimate 100 million park guests have seen Bubbles perform.
Her cause of death wasn’t immediately known; a necropsy will be performed.
“While Bubbles will be greatly missed by all who knew and loved her, she has helped generations of park visitors gain a better appreciation for all animals and the ocean environment, “ SeaWorld spokeswoman Kelly Terry said in a statement.