An oil slick off the coast of California has started washing ashore, killing fish, contaminating wetlands and closing beaches, BBC reports.
About 3,000 barrels of oil have spread over an area covering 13 square miles (33 sq km), off the Orange County coast.
Huntington Beach Mayor Kim Carr said portions of the coastline were covered in oil.
An investigation into the pipeline breach that caused it is under way.
The slick, about five miles off the coasts of Huntington Beach and Newport Beach, was discovered on Saturday morning.
It's thought to be one of the largest oil spills in the state's recent history, according to Associated Press.
Authorities are now attempting to contain the oil by using protective booms. Divers are also working at the scene to determine how the leak occurred.
"Wildlife is dying. It's very sad," Orange County Supervisor Katrina Foley told CBS News. She added that there were reports of dead animals along the shore and Talbert Marsh, an ecological reserve had also suffered "significant damage".
The US Coast Guard said it had rescued one duck that was covered in oil and is investigating other similar reports.
Amplify Energy Corp, which owns three off-shore platforms, said it stopped operations and shut its pipeline on Saturday.
CEO Martyn Willsher said the pipeline had been suctioned to ensure that no more oil would spill.
