One year anniversary of BP oil spill (21 images)

Shrimp boats drag their nets through the waters off Grand isle, Louisiana, April 18, 2010. Fishermen have begun to return to the island a year after the explosion of the Deepwater Horizon, which killed 11 men working on the platform and caused an underwater leak that gushed 53,000 barrels of oil a day for three months. UPI/A.J. Sisco.

A family walks out a pier to fish at sunset on Grand Isle, Louisiana, April 18, 2011. Tourists and fishermen have begun to return to the island a year after the explosion of the Deepwater Horizon, which killed 11 men working on the platform and caused an underwater leak that gushed 53,000 barrels of oil a day for three months. UPI/A.J. Sisco.

Louisiana State University student Kyle Treloar, left, throws a cast net for bait at a marina on Grand Isle, Louisiana, April 18, 2011. Tourists and fishermen have begun to return to the island a year after the explosion of the Deepwater Horizon, which killed 11 men working on the platform and caused an underwater leak that gushed 53,000 barrels of oil a day for three months. UPI/A.J. Sisco.

A flock of seabirds stands in the surf of Grand Isle, Louisiana, April 18, 2011. The anniversary of the BP Deepwater Horizon oil spill is April 20. UPI/A.J. Sisco.