© Chris Johnson โ earthOCEANA large number of bottlenose dolphins have washed ashore dead on the Mid-Atlantic Coast since early July.
An unusually large number of bottlenose dolphins are washing up on the shores of the Mid-Atlantic U.S. Coast, most of them already dead. Federal scientists have declared it an "unusual mortality event" and are investigating the cause.
The number of dolphins stranded in July is more than seven times higher than average, scientists from the National Oceanic and Atmospheric Administration (NOAA) said in a conference call today (Aug. 8).
The strandings began at the beginning of July, and have accelerated in the past two weeks, said Teri Rowles, National Marine Mammal Stranding Coordinator with NOAA Fisheries.
Higher-than-average levels of
dolphin strandings have been seen in New York, New Jersey, Delaware, Maryland and Virginia, scientists said. In July, a total of 89 dolphins were stranded in these areas. As of yesterday (Aug. 7), a total of 35 strandings have occurred already in the month of August.
Although the cause is not yet known, the primary suspect is
morbillivirus, an infectious pathogen, Rowles said. One dead dolphin has tested positive for this virus, she added.