Blue was placed under veterinary observation on Jan. 31, but his condition had not yet been diagnosed when he died earlier this month.

A 21-year-old harbor seal at Buttonwood Park Zoo in New Bedford, named Blue, died last week from highly pathogenic avian influenza, known as avian flu or bird flu. Diagnostic testing on Blue showed that he died from complications from the virus,

A beloved seal at the Buttonwood Park Zoo in New Bedford, Massachusetts, died of bird flu, zoo officials said. Laboratory testing confirmed that Blue, a 21-year-old harbor seal, died of complications from Highly Pathogenic Avian Influenza (HPAI),

Zoos are ramping up protections for their animals, after a seal died in February, from the avian flu. Blue, the 21-year-old harbor seal died at Buttonwood Park Zoo, in New Bedford. He was known for his involvement in educational lessons,