BRIGANTINE — Two more dead bottle-nose dolphins were found on beaches here Thursday, raising the number that washed ashore in New Jersey this year to a record-tying 93.

One of the dolphins was found on the beach at 35th Street, according to officials with the Marine Mammal Stranding Center here.

The other dolphin was discovered on the beach at the city’s north end, they said. An exact location was not available.

More than 430 dolphins have died from New York to North Carolina, according to the National Oceanic and Atmospheric Administration.

NOAA is calling the deaths an unusual mortality event. A similar event occurred in 1987, when 93 dolphins also washed ashore in New Jersey.

The cause of the 1987 deaths was eventually attributed to a form of measles called morbillivirus.

NOAA announced in late August that the preliminary cause of this year’s deaths is also morbillivirus.