A necropsy, or animal autopsy, is being conducted by University of Georgia pathologists and aquarium vets to determine the cause of death. The results are expected in the next several weeks.
A Georgia Aquarium blog said, however, that “an exact cause of death may never be known for sure.”
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The aquarium said in a statement that the beluga whale habitat will remain open to the public with Qinu and Grayson.
A baby beluga whale born to Maris and Beethoven at the Georgia Aquarium in May died in June after not gaining significant weight after the birth.
The pregnancy was the second for Maris. A female whale calf born to Maris and Beethoven at the aquarium in May 2012 died after less than a week.