Published: Oct 05, 2010 3:38 PM EDT
Updated: Oct 05, 2010 12:38 PM EDT

ORLANDO, Fla. (AP) - A killer whale who was the first to be born successfully at SeaWorld Orlando has died.

Twenty-five-year-old Kalina grew ill Monday afternoon and died in the early evening. A park spokesman says the whale was eating well and seemed healthy just a day before.

Results of a necropsy won't be available for several weeks.

Kalina was born at the park in 1985 and later became a mother to several calves herself.