

A heavily-oiled bird is seen after being rescued from the waters of Barataria Bay, which are laden with oil from the Deepwater Horizon spill, in Plaquemines Parish, La., on June 26. Gerald Herbert/AP
A crab moves past an oil tar ball on Belle Fontaine beach in Jackson County, Miss., on June 27. James Edward Bates/The Sun Herald/AP
Oil from the Deepwater Horizon spill pools off the Chandeleur Islands in the Gulf of Mexico on June 26. James Edward Bates/The Sun Herald/AP
Dolphins swim near a boat carrying the Florida governor on a tour of oil skimming efforts in Pensacola Bay in Pensacola, Fla., on June 26 as small amounts of oil from the Gulf oil spill have started to come ashore in Pensacola. Dave Martin/AP
Ships work to contain the oil spill near the site of the Deepwater Horizon accident in the Gulf of Mexico on June 24. Daniel Beltra/Retuers
A surfer watches an oily wave approach as he waits to catch a ride in Destin, Fla., on June 28. Dave Martin/AP
Plaquemines Parish Coastal Zone Director P.J. Hahn rescues a heavily oiled bird from the waters of Barataria Bay, La., on June 26. Gerald Herbert/AP
Oil gathers in the surf next to an oil containment boom attached to the beach in Gulf Shores, Ala., on June 25. Dave Martin/AP
Members of the media and onlookers take a close look at the aquarium, which for the time being, is empty, during media day at the Diamond Jo National River Center in Dubuque, Iowa. A new exhibit at an aquarium in Iowa that had intended to showcase the beauty of the Gulf of Mexico will instead be void of life to underline the environmental impact of a massive oil spill. Mike Burley/The Telegraph Herald/AP
A man-made sand berm is seen from the air near the Chandeleur Islands on the coast of Louisiana on June 23. Patrick Semansky/AP
Oil from the Deepwater Horizon rig is visible on the surface of Gulf of Mexico in this June 18 satellite image provided by NASA. NASA/AP
Booms begin to absorb oil as they are skimmed across the water in the Perdido Pass in Orange Beach, Ala., on June 24. Dave Martin/AP
Oil from the Deepwater Horizon oil spill is seen floating on the surface of the water in Bay Jimmy in Plaquemines Parish, La., on June 26. Gerald Herbert/AP
Oil collects on the water's surface near the site of the Deepwater Horizon oil spill in the Gulf of Mexico on June 13. Dave Martin/AP
An injured bird lies on the beach in Pensacola Bay in Pensacola, Fla., on June 26. Dave Martin/AP
An injured Kemp's Ridley sea turtle receives care at Sea World in Orlando, Fla., on June 25. Eleven turtles have been receiving care at the Institute for Marine Mammal Studies in Gulfport, Miss. for injuries related to fishing lines and hooks. The turtles were sent to Florida's Disney World and Sea World to make room for other turtles in need of treatment due to the gulf oil spill. John Raoux/AP
A cleaned pelican, formerly oiled from the Deepwater Horizon oil spill, flies after being released at the Aransas National Wildlife Refuge on the Texas Gulf Coast on June 23. Gerald Herbert/AP
Kevin Reed of Pensacola looks over the oil-defiled shores of Pensacola Beach, Fla., on June 23 as oil began to wash ashore from the Deepwater Horizon oil spill in the Gulf. Edmund D. Fountain/St. Petersburg Times/AP
Crude oil from the Deepwater Horizon oil spill washes ashore in Orange Beach, Ala., on June 12. Large amounts of the oil battered the Alabama coast, leaving deposits of the slick mess some 4-6 inches thick on the beach in some parts. Dave Martin/AP
A sea turtle covered in oil swims off Grand Terre Island, La., on June 8. Lee Celano/Reuters
An oil-covered Brown Pelican struggles to fly at Queen Bess Island, La., on June 6. Charlie Riedel/AP
Smoke billows from controlled burns of spilled oil off the Louisiana coast in the Gulf of Mexico on June 13. Sean Gardner/Reuters
Patches of oil from the Deepwater Horizon spill are seen from an underwater view near Venice, La., on June 7. Rich Matthews/AP
Mickal Vogt of Covington, La., uses a stick to place tar balls in a jar that washed up on the shore in Orange Beach, Ala., on June 12. Dave Martin/AP
Oil from the Deepwater Horizon spill floats on the water on Barataria Bay off the coast of Louisiana, on June 7. Charlie Riedel/AP
A group of oiled pelicans stand in their 8-by-8-foot, mesh-covered pen on June 11 until they are healthy enough to be washed by staff and volunteers at the Fort Jackson, La., Rescue Center for birds rescued from the Gulf of Mexico spill. About 350 birds were being cared for at the facility on June 11. Janet McConnaughey/AP
OIl clings to marsh grass in Bay Barataria near Grand Isle, La., on June 14. Sean Gardner/Reuters
A worker washes his his boots after cleaning up oil from the Deepwater Horizon oil spill on the beach on June 14 in Grand Isle, La. Charlie Neibergall/AP
An oil-coated Brown Pelican stands on Queen Bess in Bay Barataria near Grand Isle, La., on June 14. These birds are being rescued and transported to the Fort Jackson Rehabilitation Center by well-trained and knowledgeable wildlife responders, veterinarians, and biologists. Sean Gardner/Reuters
Oil breaches a hard boom that surrounds Cat Island off the coast of Louisiana on June 14. Derick E. Hingle/AP
Water flows over an oil containment boom in the Perdido Pass in Orange Beach, Ala., on June 13. Dave Martin/AP
Recuperating in an outdoor pen until they’re ready for release, pelicans swim while others perch on the rim of their pool on June 11 at a bird rescue center near Fort Jackson in Louisiana. Janet McConnaughey/AP
Smoke billows from a controlled burn of spilled oil off the Louisiana coast in the Gulf of Mexico on June 9. Petty Officer First Class John Masson/US Coast Guard/Reuters
A brown, oil-covered pelican is seen on the beach at East Grand Terre Island along the Louisiana coast on June 3, 2010. Oil from the Deepwater Horizon has affected wildlife throughout the Gulf of Mexico. Charlie Riedel/AP
A reporter is reflected in an oily sheen during a tour by Louisiana Gov. Bobby Jindal of an area affected by the Deepwater Horizon oil spill on June 2. Charlie Riedel/AP
An Atlantic bottlenose dolphin swims in a lagoon behind yellow protective booming erected by the US Coast Guardon June 3 in Grassy Key, Fla. No oil has arrived yet, but officials installed hundreds of feet of booms at the Dolphin Research Center as a precaution. Tony Winton/AP
A brown pelican is cleaned at the Fort Jackson Wildlife Rehabilitation Center at Buras, La., on May 15. The bird was rescued after being exposed in an oil spill in the Gulf of Mexico caused by the explosion of BP's Deepwater Horizon oil platform. Charlie Riedel/AP
Oil reaches the marshlands on the northeast pass of the Mississippi Delta on May 23 in the Gulf of Mexico. Daniel Beltra/Reuters
A bird flies above oil on the Gulf of Mexico off East Grand Terre Island along the Louisiana coast on June 3. Charlie Riedel/AP
Tar balls sit along the beach as workers clean up oil residue in Grand Isle, La., on May 30. Jae C. Hong/AP
Pelican eggs that appear to be stained with oil sit in a nest on an island in Barataria Bay in Plaquemines Parish, on the coast of Louisiana on May 22. The island which is being affected from oil from the Deepwater Horizon oil spill, is home to hundreds of brown pelican nests as well at terns, gulls, and roseated spoonbills. Gerald Herbert/AP
Oil-absorbent material boom and oil from the Deepwater Horizon oil spill are seen on Elmer's Island in Grand Isle, La. on May 25. Gerald Herbert/AP
A sea bird is mired in oil on the beach at East Grand Terre Island along the Louisiana coast on June 3. Charlie Riedel/AP
Hermit crabs covered in reddish-brown oil are shown on the coast at Dauphin Island, Ala., on June 1. John David Mercer/Mobile Press-Register/AP
Louisiana Gov. Bobby Jindal holds up oiled marsh grass as he tours an area affected by the Deepwater Horizon oil spill at Northeast Pass, La. on June 2. Charlie Riedel/AP
A brown pelican is seen on the beach at East Grand Terre Island along the Louisiana coast after being drenched in oil from the Deepwater Horizon oil spill on June 3. Charlie Riedel/AP
Another brown pelican sits in heavy oil on the beach at East Grand Terre Island along the Louisiana coast on June 3. Charlie Riedel/AP
Danene Birtell (l.) of Tri-State Bird Rescue and Research and Patrick Hogan (r.) of International Bird Rescue and Research Center clean an oiled pelican in Buras, La., on June 3. Gerald Herbert/AP
An oil-covered crab is seen on a beach at the mouth of the Mississippi River near Venice, La., on May 19. Oil from last month's Deepwater Horizon oil rig explosion in the Gulf of Mexico is drifting ashore along the Louisiana coast. Charlie Riedel/AP
Nesting pelicans are seen landing as oil washes ashore on an island that is home to hundreds of brown pelican nests as well as terns, gulls, and roseated spoonbills in Barataria Bay, just inside the coast of Louisiana on May 22. Gerald Herbert/AP
An oil soaked pelican takes flight after Louisiana Fish and Wildlife employees tried to corral him on an island in Barataria Bay just inside the the coast of Louisiana, on May 23. Gerald Herbert/AP
A young heron sits stuck amidst oil splattering underneath mangroves on an island affected by oil from the Deepwater Horizon oil spill in Barataria Bay on May 23. The island is home to hundreds of herons, brown pelicans, terns, gulls, and roseate spoonbills. Gerald Herbert/AP
A pod of Bottle Nose dolphins swim under the oily water of Chandeleur Sound, La., on May 6. Alex Brandon/AP
A sea turtle rescued from the Gulf oil spill, a baby Kemp's ridley, lies in a soapy bath after arriving at the Audubon Aquarium Aquatics Center on New Orleans' west bank. The turtle was found about 35 miles from Venice, La., and was brought to New Orleans for treatment. Meghan Calhoun/Audubon Nature Institute/AP
Oil washes ashore against a land bridge built by the Louisiana National Guard to hold back oil from the Deepwater Horizon oil spill in Grand Isle, La., on May 21. Gerald Herbert/AP
Baby, immature, and adult pelicans stained by oil rest on an island in Barataria Bay just inside the coast of Louisiana, on May 23. Gerald Herbert/AP
Oil stains cover much of a sand bar in South Pass, La., on May 21. A month after BP's Deepwater oil spill in the Gulf of Mexico, oil still pours from the source and has begun to reach coastal Louisiana. Lee Celano/Reuters
National Wildlife Federation worker Emily Guidry examines oil on reeds along the Louisiana coast at the Mississippi River delta south of Venice, La., on May 20. Charlie Riedel/AP
A dragonfly tries to clean itself as it is stuck to marsh grass covered in oil from the Deepwater Horizon oil spill, in Garden Island Bay on the Gulf Coast near Venice, La., on May 18. Gerald Herbert/AP
Oil from the Deepwater Horizon oil spill is seen clumped on roseau cane in the Northeast Pass of the Mississippi River on the coast of Louisiana near Venice on May 18. Gerald Herbert/AP
Greenpeace worker Lindsey Allen collects samples of oil that washed up along the mouth of the Mississippi River near Venice, La., on May 19. Charlie Riedel/AP
Black waves of oil are seen off the side of the supply vessel Joe Griffin at the site of the Deepwater Horizon oil spill containment efforts in the Gulf of Mexico off the coast of Louisiana on May 9. Gerald Herbert/AP
A tricolored heron fishes in clean waters near Venice, La., on May 20. Coastal birds like the heron are at risk as oil from last month's Deepwater Horizon oil rig explosion in the Gulf of Mexico has started drifting ashore along the Louisiana coast. Charlie Riedel/AP
A May 18 aerial photo provided by the Louisiana Governor's office shows thick, rust-colored ribbons of emulsified oil encroaching on the shores of the Pass a Loutre Wildlife Management Area, dark pools of oil forming near the coast, and oil running over protective booms. Louisiana Governor's Office/AP
Workers clean a brown pelican on May 15 at the Fort Jackson Wildlife Rehabilitation Center at Buras, La. The bird was rescued after being exposed to an oil spill in the Gulf of Mexico caused by the explosion of BP's Deepwater Horizon oil platform. Charlie Riedel/AP
An aerial view of the northern Chandeleur barrier islands shows a sheen of oil reaching land in the Gulf of Mexico on May 6. The islands lie 20 miles from the main Louisiana coastline. David Quinn/AP
Charlie Pelizza and Sharon Taylor of The US Fish and Wildlife Service release a black gannet that was rescued from the Gulf of Mexico into the wild at the Pelican Island National Wildlife Refuge on May 10 near Vero Beach, Fla. Rick Silva/AP
An oil-stained cattle egret sits on the deck of the Joe Griffin at the site of the Deepwater Horizon oil rig explosion and oil spill in the Gulf of Mexico on May 9. Gerald Herbert/AP
An oil soaked bird struggles against the side of the HOS, an Iron Horse supply vessel, at the site of the Deepwater Horizon oil spill in the Gulf of Mexico off the coast of Louisiana on May 9. Gerald Herbert/AP
A northern gannet swims in a recovery pool on May 7 outside the bird rescue center in Fort Jackson, La. The bird was washed the day after it was found and recovered from the oil spill, and could probably be released in a week well away from the spill, said Jay Holcomb of the International Bird Rescue Research Center, based in San Francisco. Janet McConnaughey/AP
A Portuguese man-o-war is seen from under the oily water in Chandeleur Sound, La., on May 6. Alex Brandon/AP
Oil dispersant and an oil sheen are seen on top of the water in the Gulf of Mexico on May 5 off the coast of Louisiana. Matt Stamey/The Houma Courier/AP
Surrounded by a boom line, birds roost on one of the islands that make up the Chandeleur Islands chain in the Mississippi Sound on May 3. William Colgin/Sun Herald/AP