Officials say two more captive dolphins are sick at Gulf World Marine Park, where a pair of the marine mammals died last week. It's not clear whether these cases are related to the wild dolphin deaths.
Blair Mase is the Southeast stranding coordinator for the National Marine Fisheries Service. She says tissue analysis of bottlenose dolphins that died in the wild indicate they had been exposed to red tide, but more tests are pending to determine if that's what killed them.
Mase says the analysis also detected domoic acid, another naturally occurring toxin, but one common to California waters.
The dolphin bodies began turning up March Tenth in St. Joseph's Bay near Port St. Joe and continued to be found west to Panama City Beach.