The Coast Guard responded yesterday to a report of an oil sheen in the Shark River, authorities said.
According to a release from the agency, the sheen appeared on the surface during dredging operations near Belmar.
Crews aboard the dredge deployed a sorbent boom to contain the oil.
Coast Guard officials don’t yet know the source of the sheen but divers are scheduled to investigate today.
Authorities haven’t yet specified the size of the sheen or if there are any environmental impacts.
The New Jersey Department of Environmental Protection and the National Oceanic and Atmospheric Administration also responded.