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Active and Closed Unusual Mortality Events

Since 1991, marine mammal unusual mortality events (UMEs) have been declared.

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A stranding responder measures a stranded loggerhead sea turtle on a Florida beach. A stranding responder measures a stranded loggerhead sea turtle on a Florida beach. Photo credit: Florida Sea Turtle Stranding and Salvage Network
Pair of bottlenose dolphins Pair of bottlenose dolphins. Credit: NOAA Pacific Islands Fisheries Science Center/Lisa Morse.