Scientists concerned by bottlenose dolphin deaths in the Gulf of Mexico have reportedly asked for the marine mammal equivalent of a disaster declaration.

A 12-member working group of scientists voted Monday to recommend the National Oceanic and Atmospheric Administration add the dolphin deaths to an "unusual mortality event" the group declared in March for manatees, the Naples (Fla.) Daily News reported Tuesday.

The scientists suspect "red tide" is responsible for the deaths and NOAA is expected to initiate a study of the microscopic algae bloom's effects on dolphins, manatees, sea turtles and even seabirds.

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