AKIPRESS.COM - The U.S. Coast Guard captain overseeing cleanup of oil spilled from a pipeline rupture that closed two California state beaches and fouled offshore waters near Santa Barbara said on Thursday it may take months to restore the area to its natural condition, reports Reuters.

Up to 2,500 barrels (105,000 gallons) of crude 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 burst.

As much as a fifth of the amount was believed to have reached the ocean, leaving oil slicks that stretched for more than 9 miles (15 km) along the coast.

Environmental activists and local officials said it could turn out to be the largest oil spill in 46 years to hit the ecologically sensitive but energy-rich Santa Barbara shoreline, about 125 miles (200 km) northwest of Los Angeles.

The spill zone lies at the edge of a national marine sanctuary and state-designated underwater preserve teeming with whales, dolphins, sea lions, some 60 species of sea birds and more than 500 species of fish. The surrounding waters are shared by nearly two dozen offshore oil platforms.