Coast Guard, Partners Respond to Mysterious Oil Sheen Off Calif. Coast

A U.S. Coast Guard Air Station San Francisco flight crew conducts an overflight to monitor an oil sheen off of Summerland Beach in Santa Barbara, Calif., Jan. 7, 2023. The sheen was reported to be about two miles long. U.S. Coast Guard photo.

U.S Coast Guard pollution responders and partners responded to an oil sheen off Summerland Beach in Santa Barbara County, Calif. on Jan. 6.

The estimated 1.5-mile to 2-mile-long sheen was reported to be five nautical-miles off Santa Barbara. The sheen’s cause was unknown at the time, but on Jan. 17, California Department of Fish and Wildlife’s Office of Spill Prevention and Response said the sheen was likely natural seepage.

Just after 2 p.m. on Jan. 6, watchstanders from U.S. Coast Guard Marine Safety Detachment Santa Barbara were notified by the California Governor’s Office of Emergency Services of a possible oil sheen in the water.

The partner agencies informed the National Response Center of the incident and planned further actions.

A U.S. Coast Guard Air Station San Francisco MH-65 Dolphin helicopter flight crew conducted an overflight of an oil sheen off Summerland Beach on Jan. 7.

As of the time this magazine went to press, there were no reports from the California Department of Fish and Wildlife of any wildlife being harmed.

In a news release, the Office of Spill Prevention and Response stated that lab results from multiple locations onshore and offshore “indicate the product is consistent with local natural seep oil.”

As of mid-January, the oil was unable to be recovered.