A dolphin died after washing up on Jacksonville Beach on Friday morning.
After it washed up about 8 a.m. near 18th Street North, Florida Fish and Wildlife Conservation Commission biologists went to the beach. They said a necropsy was done to see why the dolphin died.
Officials said they tested for the morbillivirus, which has been killing dolphins along the East Coast since last fall.
The virus was cited in the deaths of 61 dolphins in northeast Florida last year and more than a dozen so far this year.
The last outbreak of the virus was in the late 1980s. Officials said this one is worse.
If you see a dead or distressed dolphin, call 1-888-404-3922.