Scientists are still puzzled over what appears to be a neurotoxin that's killing dozens of species of fish in the Florida Keys. Called "whirling," the condition involves sick fish swimming in odd, ...

(CNN) - There’s a strange underwater mystery in the Florida Keys. Fish there are swimming in circles until they die. Now, researchers are racing to figure out what’s causing the bizarre behavior and ...

A mysterious ailment causing fish in the Florida Keys to spin in circles has touched off a frantic race to find the cause and save an endangered species before it’s too late. Subscribe to read this ...