HUNTINGTON BEACH, Calif. (AP) One of the largest oil spills in recent Southern California history fouled popular beaches that could end up closed for months as crews scrambled Sunday to contain the crude before it spread further into protected wetlands.

Divers were trying to determine where and why the leak occurred, but the flow of oil was stopped late Saturday from the pipeline that runs under the ocean off Huntington Beach, according to the head of the company that operates the line.

At least 126,000 gallons (572,807 liters) of crude spilled into the waters off Orange County starting late Friday or early Saturday when boaters began reporting a sheen in the water, officials said.

I dont expect it to be more. Thats the capacity of the entire pipeline, said Amplify Energy CEO Martyn Willsher. He said the pipeline was suctioned out and dozens of nearby oil platforms operated by Amplify were shut down.