A small tarball of unknown origin is seen in the sand at Goleta Beach Park in Goleta, California July 30, 2015. The U.S. Coast Guard was investigating a large, patchy oil sheen that appeared off the ... more 
A small tarball of unknown origin is seen in the sand at Goleta Beach Park in Goleta, California July 30, 2015. The U.S. Coast Guard was investigating a large, patchy oil sheen that appeared off the Southern California coast west of Santa Barbara on Wednesday, not far from the site of a petroleum pipeline spill in May, officials said. The slick, spanning approximately 3 square miles (8 square km) of the Pacific about 1,000 yards (meters) from shore, was spotted off Goleta State Beach, but the origin of the sheen was unknown, said Coast Guard spokeswoman Petty Officer Sondra-Kay Kneen. REUTERS/Patrick T. Fallon less 
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Reuters | Photo By PATRICK T. FALLON / REUTERS
Fri, Jul 31, 2015 2:50 AM EDT