Cleaning vessels attempt to clear oil after about 50 tons of crude oil leaked from a pipe into the sea in Rayong province, eastern Thailand, on July 27, 2013. #

Streaks of crude oil along the shore of Prao Bay on Samet Island, on July 29, 2013. #

Thai soldiers take part in a clean-up operation at Ao Prao Beach on Koh Samet, on July 29, 2013. #

A Thai soldier shows his gloves covered with oil during a clean-up operation on Koh Samet, on July 29, 2013. #

A cleaning vessel works to clears spilled oil in Rayong province, on July 27, 2013. #

Thai soldiers undertake cleaning operations at Ao Prao Beach on Koh Samet, on July 31, 2013. #

A crab covered in oil on Ao Prao Beach, Koh Samet, on July 30, 2013. #

A vessel takes part in a clean-up operation near Ao Prao Beach, Koh Samet, on July 30, 2013. #

Workers remove crude oil from a beach on Prao Bay, on July 30, 2013. #

A Thai soldier wearing an oil-covered biohazard suit, during clean-up operations on Ao Prao Beach, on July 31, 2013. #

Thai soldiers work to clean the oil from Ao Prao Beach, on July 31, 2013. #

A Thai soldier rolls out a ream of absorbent paper in a clean-up operation on Ao Prao Beach, on July 30, 2013. #

Thai soldiers during the clean-up operation on Ao Prao Beach, on July 30, 2013. #

Soldiers shovel oil-fouled sand from Ao Prao Beach, on July 30, 2013. #

Oil streaks seawater on Ao Prao Beach, Koh Samet, on July 31, 2013. #

A soldier drinks water during the clean-up operation on Ao Prao Beach, on July 30, 2013. #

Workers use buckets to remove crude oil from a beach on Samet Island, on July 30, 2013. #

Oil clean-up operations continue at Ao Prao Beach, Koh Samet, on July 31, 2013. #

Piyapong Sopakhon, 13, a volunteer from Koh Samet, wears a plastic bag as he takes part in cleaning operations on Ao Prao Beach, on July 31, 2013. #

Thai soldiers wearing biohazard scoop spilled crude oil from the waters of Prao Bay, Samet Island, Thailand, on July 31, 2013. #