Dear Aquarium Staff and Volunteers,
We are saddened to announce that Norton, one of the Aquarium’s original whale sharks,
died today.
As many of you know, during the last few months Norton stopped eating and started
showing erratic swimming behavior. In response, exhaustive diagnostic tests were
conducted by husbandry and veterinary staff. Supplemental care was provided to Norton,
and the team was encouraged and hopeful his condition would improve. Despite every
effort of our team, his health continued to decline until his death early this morning.
Yesterday, husbandry staff noted a marked decline in Norton’s swimming behavior. A
team moved to administer care, and his blood work confirmed his decline in health. A
24-hour watch was put in place, and early this morning, Norton stopped swimming and
settled to the bottom. Divers brought Norton to the stretcher where additional blood
work confirmed his continued decline in health. After every option had been exhausted
to improve Norton’s health, the team made the decision to humanely euthanize him.
A necropsy (animal autopsy) will be performed to further our understanding of whale
sharks and study the cause of Norton’s decline in health. Norton’s remains will then be
cremated.
Ralph’s necropsy in January showed peritonitis, an inflammation of the membrane that
lines the abdominal cavity, as the cause of death. At this time, the exact cause of
Norton’s declining health is unknown. The team is investigating multiple theories for
any links between the deaths of the two animals. Several months ago, we observed both
Ralph and Norton stop eating within a few days of each other. One theory to this loss of
appetite is a series of treatments used last year to manage parasites in the Ocean Voyager
exhibit. The treatment is commonly used in both home and professional aquariums and
was used in a conservative manner in our exhibit. As a precaution, the Aquarium stopped
using this treatment after the loss of appetite was observed. We have not ruled out other
theories and will let the science lead us as we learn everything possible from the loss of
Norton.
The other whale sharks did not experience this course of treatment. Alice, Trixie, Taroko
and Yushan are all eating well.
It is our great effort to advance the worldwide awareness and scientific knowledge of
whale sharks that gives me pride and strength during this difficult time.
Sincerely,
Jeff Swanagan
President and Executive Director
Georgia Aquarium