Whale Shark Necropsy Shows No "obvious" Cause Of Death

A necropsy of one of the Georgia Aquarium's prized whale sharks did not reveal any obvious causes of death, but the investigation is continuing and could take months, aquarium officials said Saturday. Ralph, one of four whale sharks at the 1-year-old aquarium, died Thursday night. It was the second death of a popular exhibit at the aquarium in 10 days. Officials said the whale shark stopped swimming Thursday afternoon and died later that night...