BROOKLYN - A dolphin found swimming off the coast of Brooklyn is now feared dead.

The dolphin was swimming freely in the water earlier, which the Riverhead Foundation for Marine Research and Prevention says most likely meant it was healthy and unharmed. However, the dolphin has not been spotted coming up for air since Thursday at around 3 p.m. The water is shallow and the creek has a muddy ground.

The New York Aquariums former curator, Paul Sieswerda says he believes the dolphin was not well to begin with.

The NYPD and divers were on the scene waiting until high tide in hope that the dolphin would be able to find its own way back to the Atlantic Ocean.

Chopper 12 was overhead after it was spotted in Coney Island Creek at Cropsey Avenue and Bay 54th Street at around 10:30 a.m.

For Chopper 12 over dolphin in Brooklyn, watch the clip to the left or click News 12 Extra on Optimum TV channel 612.