Workers clean up an oil slick along the coast of Refugio State Beach in Goleta, California, United States, May 21, 2015. Up to 2,500 barrels (105,000 gallons) of petroleum, according to latest estimates, gushed onto San Refugio State Beach and into the Pacific about 20 miles (32 km) west of Santa Barbara on Tuesday when an underground pipeline that runs along the coastal highway inexplicably burst. REUTERS/Lucy Nicholson