A pod of Bottlenose dolphins swim under the oily water Chandeleur Sound, Louisiana, Thursday, May 6, 2010 in the Gulf of Mexico. (AP Photo/Alex Brandon)
One of the New harbor Islands is protected by two oil booms against the oil slick that has passed inside of the protective barrier formed by the Chandeleur Islands, as cleanup operations continue for the BP Deepwater Horizon platform disaster off Louisiana, on May 10, 2010. (MARK RALSTON/AFP/Getty Images)
Blobs of oil from the massive spill float on the surface of the water on May 5, 2010 in Breton and Chandeleur sounds off the coast of Louisiana. (Joe Raedle/Getty Images)
Heather Neville of Tristate Bird Rescue and Research rinses off an oiled brown pelican which was captured on a barrier island off the fragile Louisiana coast on Tuesday, May 4, 2010 at a triage center in Fort Jackson, Louisiana. (MIRA OBERMAN/AFP/Getty Images)
Oil from the Deepwater Horizon oil spill makes its way to shore on Chandeleur Islands in Louisiana on May 7, 2010. (AP Photo/The Dallas Morning News, Vernon Bryant)
Seawater covered with thick black oil splashes up in brown-stained whitecaps 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 Sunday, May 9, 2010. (AP Photo/Gerald Herbert)
A tugboat moves through the oil slick on May 6, 2010 in the Gulf of Mexico. (Michael B. Watkins/U.S. Navy via Getty Images)
Dark clouds of smoke and fire emerge as oil burns during a controlled fire in the Gulf of Mexico, May 6, 2010. The U.S. Coast Guard working in partnership with BP PLC, local residents, and other federal agencies conducted the "in situ burn" to aid in preventing the spread of oil. (REUTERS/Mass Communication Specialist 2nd Class Justin Stumberg-US Navy)
The crew of a Basler BT-67 fixed wing aircraft releases oil dispersant over parts of the oil spill off the shore of Louisiana in this May 5, 2010 photograph. (REUTERS/Stephen Lehmann/U.S. Coast Guard)
Winds cause ripples to form on the water of grassy marsh wetlands in St. Bernard Parish, Louisiana, as work continues to try to protect it from the massive oil spill on May 9, 2010 in Gulf of Mexico. (Joe Raedle/Getty Images)
A worker with one of the shoreline clean-up crews deploys a snare boom on the west side of the South Pass near Port Eades, Louisiana May 11, 2010. (REUTERS/Sean Gardner)
A man holds a plastic bag with seawater and oil from the Gulf of Mexico oil spill south of Freemason Island, Louisiana May 7, 2010. (REUTERS/Carlos Barria)
An oil-stained cattle egret rests on the deck 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, Sunday, May 9, 2010. (AP Photo/Gerald Herbert)
Oily water is seen off the side of the Joe Griffin supply vessel at the site of the Deepwater Horizon oil spill containment efforts in the Gulf of Mexico on Saturday, May 8, 2010. (AP Photo/Gerald Herbert)
A helicopter takes off from the helipad of the Development Driller III, which is drilling the relief well at the site of the Deepwater Horizon oil spill, in the Gulf of Mexico on May 11, 2010. (REUTERS/Gerald Herbert)
Oil washes onto the sides of a 100-ton concrete-and-steel pollution containment chamber as the mobile offshore drilling unit Q4000 lowers it into the water at the Deepwater Horizon site on May 6, 2010 in the Gulf of Mexico . The chamber was designed to cap the oil discharge that was a result of the Deepwater Horizon incident. (Patrick Kelley/U.S. Coast Guard via Getty Images)
The single cable supporting the 100-ton oil containment device being lowered to the sea floor disappears into Gulf waters off the side of the Q400 mobile drilling platform on Sunday, May 9, 2010. Efforts to contain the leak with the device were unsuccessful due to ice crystals forming in its domed roof. (AP Photo/Gerald Herbert)
Workers attempt to secure an oil boom into place in an effort to protect the coast line from the massive oil spill near Hopedale, Louisiana May 10, 2010. (REUTERS/Sean Gardner)
Crews build a sand berm to protect the island from the potential of oil washing onshore, on Dauphin Island, Alabama May 10, 2010.
Unemployed commercial fishermen and their families wait in line to receive handouts from New Orleans Catholic Charities on May 5, 2010 in Hopedale, Louisiana. Many local fishermen have been temporarily shut down but have been hired by British Petroleum (BP) to lay oil booms in sensitive areas. (Sandy Huffaker/Getty Images)
Captain Johnny Bourgeois and deckhand Chris Crappel (left) of Venice, Louisiana retie netting for shrimp trawling as they wait for the shrimp season to reopen in Venice, Louisiana May 9, 2010. Louisiana Department of Wildlife and Fisheries (LDWF) Secretary Robert Barham announced that the shrimp season in the territorial seas of the central coast of Louisiana from Four Bayou Pass to Freshwater Bayou were closed effective sunset Saturday. (REUTERS/Sean Gardner)
Louisiana National Guard Private Dallas Bacon guides a dump truck as they use dirt to create an earthen barrier as they try to protect an estuary from the massive oil spill on May 10, 2010 in Lafourche Parish, Louisiana. (Joe Raedle/Getty Images)
Louisiana National Guardsmen use Blackhawk helicopters to build a dam to protect the fragile wetlands known locally as "Bayou" near the town of Grand Isle, as work continues to protect the coastline from oil after the BP Deepwater Horizon platform disaster off Louisiana, on May 11, 2010. (MARK RALSTON/AFP/Getty Images)
Mississippi River water (left) meets sea water and an oil slick that has passed inside of the protective barrier formed by the Chandeleur Islands, off the coast of Louisiana, on May 7, 2010. (MARK RALSTON/AFP/Getty Images)
An aerial view of the northern Chandeleur barrier islands shows sheens of oil reaching land, Thursday, May 6, 2010 in the Gulf of Mexico. The islands rest 20 miles from the main Louisiana coastline. (AP Photo/David Quinn)
Oil and oil sheen are seen moving past an oil rig, top right, in the waters of Chandeleur Sound, Louisiana, Wednesday, May 5, 2010. (AP Photo/Eric Gay)
Steve Henne, of Marine Spill Response Corp., heads back to the Premier Explorer after a controlled burn in the Gulf of Mexico May 6, 2010. The U.S. Coast Guard working in partnership with BP PLC, local residents, and other federal agencies conducted the "in situ burn" to aid in preventing the spread of oil following the April 20 explosion on Mobile Offshore Drilling Unit Deepwater Horizon. Picture taken May 6, 2010. (REUTERS/Mass Communication Specialist 2nd Class Justin Stumberg-US Navy)
An oil soaked bird struggles against the oil slicked side of the HOS Iron Horse supply vessel at the site of the Deepwater Horizon oil spill in the Gulf of Mexico off the coast of Louisiana Sunday, May 9, 2010. (AP Photo/Gerald Herbert)
An aerial view of the oil leaked from the Deepwater Horizon wellhead, May 6, 2010. (REUTERS/Daniel Beltra)
Bruce Padilla, left, and Adam Shaw, Louisiana oilfield divers, return through blackened seawater from watching a controlled oil burn in the Gulf of Mexico May 7, 2010. (U.S. Navy photo by Mass Communication Specialist 2nd Class Justin Stumberg/Released)
Boom to protect Louisiana's fragile wetlands is put into place on Lake Machias on May 9, 2010, following a massive oil spill that is threatening the state's coastal islands. (Alex Ogle/AFP/Getty Images)
Oil, scooped up with a bucket from the Gulf of Mexico off the side of the supply vessel Joe Griffin, coats the hands of an AP reporter at the site of the Deepwater Horizon oil spill in the Gulf of Mexico, May 10, 2010. (AP Photo/Gerald Herbert)
Sunset, seen over wetlands outside of Venice, Louisiana on May 5, 2010. (REUTERS/Carlos Barria)
Risers, the outer casings of oil drill pipes, are seen on the deck of the service vessel Joe Griffin as it prepares to head to Port Fourchon at the site of the Deepwater Horizon oil spill in the Gulf of Mexico on May 11, 2010.
Capt. Demi Shaffer pilots the Joe Griffin as it enters the Gulf of Mexico carrying the containment vessel to the rig collapse site which will be used to try to contain the Deepwater Horizon oil, Wednesday, May 5, 2010.
The Viking Poseidon lowers a new leak-containment device named the "top hat", at the site of the Deepwater Horizon oil spill in the Gulf of Mexico on Tuesday, May 11, 2010. (AP Photo/Gerald Herbert)
Shrimp boats are used to collect oil with booms in the waters of Chandeleur Sound, Louisiana, Wednesday, May 5, 2010.
A dead fish lays on the beach as workers clean up hay that was placed to protect the beach from oil and tar balls in Dauphin Island, Alabama, on May 15.
The containment vessel is lowered into the Gulf of Mexico at the site of the Deepwater Horizon rig collapse, Thursday, May 6, 2010. (Gerald Herbert/AP Photo)
Oily water splashes against The containment vessel as it is lowered into the Gulf of Mexico at the site of the Deepwater Horizon rig collapse, Thursday, May 6, 2010. (Gerald Herbert/AP Photo)
An aerial view of the northern Chandeleur barrier islands shows sheens of oil reaching land, Thursday, May 6, 2010 in the Gulf of Mexico. The islands rest 20 miles from the main Louisiana coastline. (David Quinn/AP Photo)
Oil washes ashore with the waves onto New Harbor Island, La., Thursday, May 6, 2010. Oil giant BP PLC's oil rig exploded April 20, in the Gulf of Mexico killing 11 workers. It sank two days later, and oil is still pouring into the Gulf. (Alex Brandon/AP Photo)
The Joe Griffin arrives at the rig explosion site carrying the containment vessel which will be used to try to contain the Deepwater Horizon oil, Thursday, May 6, 2010. (Gerald Herbert/AP Photo)
The barge Joe Griffin arrived at the leak site on Thursday morning, May 6, 2010, the Associated Press reported. (Patrick Semansky/AP Photo)
The containment vessel which will be used to try to contain the Deepwater Horizon oil spil sits ready on the deck of the Joe Griffin at the rig explosion site, Thursday, May 6, 2010. (Gerald Herbert/AP Photo)
A bird floats in the water dead with a light oil sheen of oil on it in Chandeleur Sound, La., Tuesday, May 4, 2010. Cleanup and containment of a massive oil slick resumed Tuesday as winds eased in the Gulf of Mexico and people along beaches and bayous waited to find out just how badly it might damage the delicate coast. It is not known how the bird died. (Alex Brandon/AP Photo)
In this photo released by the U.S. Coast Guard, workers at a decontamination site in Venice, La., clean oil containment boom Tuesday May 4, 2010. The boom is to be transferred to a staging area where it will be put back into service aboard on of the many boats fighting to mitigate the effects of the uncontrolled discharge of oil that was a result of the Deepwater Horizon incident. (Petty Officer 3rd Class Patrick Kelley/U.S. Coast Guard/AP Photo)
Oil blobs and oil sheen are seen in the waters of Chandeleur Sound, La., Tuesday, May 4, 2010. Cleanup and containment of a massive oil slick resumed Tuesday as winds eased in the Gulf of Mexico and people along beaches and bayous waited to find out just how badly it might damage the delicate coast. (Eric Gay/AP Photo)
Oil blobs and oil sheen are seen in the waters of Chandeleur Sound, La., Tuesday, May 4, 2010. Cleanup and containment of a massive oil slick resumed Tuesday as winds eased in the Gulf of Mexico and people along beaches and bayous waited to find out just how badly it might damage the delicate coast. (Eric Gay/AP Photo)
Workers build a four-story 100-ton "pollution control chamber" which will be lowered 5,000 feet below the surface of the water to control oil gushing from the collapsed oil well off the coast of Louisiana May 4, 2010 in Port Fourchon, Louisiana. The chamber, commisioned by BP, is planned to be lowered onto the leaking pipe by end of the week to try to suck in the flowing oil to tanker ship on the surface. (Scott Olson/Getty Images)
A hard hat covered in oil is shown after being found in the waters off of Chandeleur Sound, La., Monday, May 3, 2010. (Alex Brandon/AP Photo)
A Portuguese Man-o-War is seen in clumps of oil in the waters in Chandeleur Sound, La., Monday, May 3, 2010. Fish and wildlife are vulnerable to the oil spill resulting from the explosion and sinking of the Deepwater Horizon oil rig. (Alex Brandon/AP Photo)
Spilled oil reflects the sun near Chandeleur Sound, La., Monday, May 3, 2010. The Chandeleur Islands, near the mouth of the Mississippi River, were among the first land areas threatened by the oil spill. (Alex Brandon/AP Photo)
Clumps of oil are seen in the waters off of Chandeleur Sound, La., Monday, May 3, 2010. (Alex Brandon/AP Photo)
A May 1, 2010 satellite image provided by NASA shows heavy oil coloring the surface of the Gulf of Mexico. The image is made from both visible and infrared light, but the slick looks similar to a natural color image made solely from visible light. The heaviest oil is silver with slightly lighter concentrations radiating out in streaks of white. The water is black, though even the dark water is tainted with white, hinting at oil on the water's surface throughout the image. (NASA/AP Photo)
A turtle is shown swimming in the gulf, approximately 16 miles off the Louisiana coast, May 3, 2010. Dozens of turtles have shown up dead in the Gulf, many of which are currently undergoing necropsies at the Marine Mammal Institute in Mississippi to determine the cause. At least five of the dead turtles have shown no trace of oil. ( Greg Jennings and Sarah Gould/ABC)
Members of the U.S. Army National Guard B Company 711 put Hesco containers along the beaches of Dauphin Island, Ala., Sunday, May 2, 2010. The containers are designed to absorb oil through a fibrous material which reacts with a non-harmful material that changes the sheen to a more solid state which can then be recycled. (Michelle Rolls-Thomas/AP Photo)
In this May 1, 2010 satellite photo provided by NASA, the oil slick in the Gulf of Mexico closes in on the Gulf Coast in the southern United States. Oil from a massive spill in the Gulf of Mexico was starting to ooze ashore, threatening migrating birds, nesting pelicans, river otters and mink along Louisiana's fragile islands and barrier marshes. (NASA/AP Photo)
Tammy Daughdrill, left, and Joey Scalcione of Long Beach, Miss., walk along a beached oil retention boom in Bay St. Louis, Miss., Sunday, May 2, 2010. Heavy seas caused booms to break and wash ashore or drift into open water. (Dave Martin/AP Photo)
Jacob Terrebone pours shrimp from the Bub-Poot-Nae's catch into a buyer's cooler, Sunday, May 2, 2010, at the Venice Marina in Venice, Louisiana. NOAA is restricting commercial and recreational fishing in oil-affected portions of the Gulf of Mexico. (Eric Gay/AP Photo)
Institute of Marine Mammal Sciences researchers Justin Main, left, and Kelly Folkedahl collect a dead sea turtle on the beach in Pass Christian, Miss., Sunday, May 2, 2010. The researchers were collecting dead animals and will examine them to determine the cause of death. (Dave Martin/AP Photo)
A crew boat lays oil booms in preparation for the looming oil spill from the sinking of the Deepwater Horizon oil rig in Gulf of Mexico, off the coast of Louisiana Sunday, May 2, 2010. (Gerald Herbert/AP Photo)
Work crews lay oil retention booms in Bay St. Louis, Mississippi, Saturday, May 1, 2010. Environmentalists are concerned about the impact of the oil slick when it makes landfall. (Dave Martin/AP Photo)
Faint streaks of oil sheen flow in the water, Saturday, May 1, 2010, along the South Pass, south of Venice, Louisiana. Wildlife in the region is vulnerable to the looming oil spill from last week's collapse and spill of the Deepwater Horizon oil rig. (Eric Gay/AP Photo)
Dr. Erica Miller, left, and Danene Birtell with Tri-State Bird Rescue and Research work to help a Northern Gannet bird, normally white when full grown. The bird is covered in oil from a massive spill in the Gulf of Mexico, at a facility in Fort Jackson, Louisiana, Friday, April 30, 2010. (Alex Brandon/AP Photo)
Dr. Erica Miller, with Tri-State Bird Rescue and Research, works to give a dose of Pepto-Bismol to a Northern Gannet bird covered in oil, Friday, April 30, 2010. (Alex Brandon/AP Photo)
Workers load flotation booms onto a crew boat to help corral oil from a leaking pipeline in the Gulf of Mexico, Thursday, April 29, 2010. The leak was caused by last week's explosion and collapse of the Deepwater Horizon oil rig. (Patrick Semansky/AP Photo)
In this image from NASA's Aqua satellite, the oil slick from the sunken Deepwater Horizon drilling platform in the gulf of Mexico spreads toward the coast of Louisiana. The earth-observing satellite shot this picture on April 25, 2010. (NASA)
Boats work in tandem to collect oil that leaked from the Deepwater Horizon wellhead in the Gulf of Mexico on April 28, 2010. The two boats drag a flotation boom between them to corral the oil on the water's surface. (Chris Graythen/Getty Images)
This image, provided by the U.S. Coast Guard Saturday, April 24, 2010, shows oil leaking from the drill pipe of the Deepwater Horizon drilling rig. Coast Guard Rear Adm. Mary Landry said the leak was a new discovery but could have begun when the rig sank on Thursday, two days after the initial explosion. (US Coast Guard/AP Photo)
This image shows the arm of a robot submersible trying to activate a shutoff device on the wellhead of the Deepwater Horizon drilling rig, 5,000 feet below the surface of the Gulf of Mexico. Leaking oil spread north from the accident site, threatening hundreds of miles of marshes, barrier islands and white sand beaches in four states from Louisiana to Florida. The Coast Guard said this picture was shot April 22, 2010, two days after the Deepwater Horizon exploded and caught fire. (US Coast Guard/AP Photo)
This aerial photo from Wednesday, April 21, 2010 shows oil spreading into the Gulf of Mexico as the Deepwater Horizon oil rig burns. The rig burned for more than a day before sinking. Oil from the well it had been drilling drifted northward toward the Louisiana coastline. (Gerald Herbert/AP Photo)
In this photo taken in the Gulf of Mexico more than 50 miles southeast of Venice on Louisiana's tip, an oil slick spreads as the Deepwater Horizon oil rig burns Wednesday, April 21, 2010. (Gerald Herbert/AP Photo)
This is what the Deepwater Horizon drilling rig looked like before the explosion and oil spill, in a photo provided by its owner, Transocean Ltd. The rig suffered an explosion on the evening of April 20, 2010, 52 miles southeast of Venice, Louisiana, the southernmost town on the Mississippi River. There were 126 workers on the platform; 11 are believed to have been killed. (Transocean/AP Photo)
A dispersant plane passes over an oil skimmer as it cleans oil from a leaking pipeline that resulted from last week's explosion and collapse of the Deepwater Horizon oil rig in the Gulf of Mexico near the coast of Louisiana Tuesday, April 27, 2010. (Patrick Semansky/AP Photo)
In this photo released by the Louisiana Office of Costal Protection and Restoration, Monday, May 10, 2010, water rushes into the St. Charles Parish wetlands East of New Orleans. The Davis pond diversion project-gated culverts through the Mississippi levy were opened fully on May 10 because the oil slick was creeping Westward in the Gulf of Mexico. (AP Photo/Louisiana Office of Coastal Protection and Restoration)
A La. National Guard Blackhawk helicopter carries sandbags in effort to dam off part of the marsh on Elmer's Island in Grand Isle, La., Monday, May 10, 2010. (AP Photo/Alex Brandon)
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 Monday, May 10, 2010 northeast of Vero Beach, Fla. (AP Photo/Rick Silva)
A La. National Guard Blackhawk helicopter lifts off with sandbags in their efforts to dam off part of the marsh on Elmer's Island in Grand Isle, La., Monday, May 10, 2010. Oil giant BP PLC's oil rig exploded April 20, in the Gulf of Mexico killing 11 workers. It sank two days later, and oil is still pouring into the Gulf. (AP Photo/Alex Brandon)
A tugboat pulls orange booms in Mobile Bay near Mobile, Ala., Monday, May 10, 2010. The state plans to seal off the bay from the oil spill in the Gulf of Mexico using gates made of the oil-blocking barriers. Natural gas platforms are visible in the background. (AP Photo/Jay Reeves)
A barge loaded with boom material is shown in Mobile Bay near Mobile, Ala., May 10, 2010. The state of Alabama plans to seal off the bay from the oil spill in the Gulf of Mexico using gates made of the oil-blocking barriers. Natural gas platforms are visible in the background. (AP Photo/Jay Reeves)
Workers place absorbent booms on the beach in Grand Isle, La. to guard against the oil coming ashore, Monday, May 10, 2010. Oil giant BP PLC's oil rig exploded April 20, in the Gulf of Mexico killing 11 workers. It sank two days later, and oil is still pouring into the gulf.(AP Photo/Alex Brandon)
A bird rescue center has been established in Theodore, Ala., to clean up seabirds caught in the Gulf Coast oil spill. Containers to house oily birds before cleaning are pictured Friday, May 7, 2010. Louisiana, Mississippi and Florida also have centers ready to treat affected seabirds. (Press-Register, Mike Kittrell)
Julie Skoglund, left, describes the washing and cleaning area of a bird rescue center established in Theodore, Ala., to clean up seabirds caught in the Gulf Coast oil spill on Friday, May 7, 2010. Louisiana, Mississippi and Florida also have centers ready to treat affected seabirds. (Press-Register, Mike Kittrell)
A bird rescue center has been established in Theodore, Ala., to clean up seabirds caught in the Gulf Coast oil spill. The facility is pictured Friday, May 7, 2010. Louisiana, Mississippi and Florida also have centers ready to treat affected seabirds. (Press-Register, Mike Kittrell)
A work flow chart for a bird rescue center established in Theodore, Ala., to clean up seabirds caught in the Gulf Coast oil spill is pictured Friday, May 7, 2010. Louisiana, Mississippi and Florida also have centers ready to treat affected seabirds. (Press-Register, Mike Kittrell)
This tracking model for the Gulf of Mexico oil spill was produced by the Ocean Circulation Group, which is part of the College of Marine Science at the University of South Florida in St. Petersburg, Fla.
Oil is seen covering the water's surface while looking down from the bridge on the Joe Griffin at the site of the Deepwater Horizon oil spill in the Gulf of Mexico off the coast of Louisiana Monday, May 10, 2010. (AP Photo/Gerald Herbert)
In a Wednesday, Plaquemines Parish President Billy Nungesser and Louisiana Gov. Bobby Jindal tour through the Roseau Grasses that mark the coastline of Southeast Louisiana at Pass a Loutre at the mouth of the Mississippi River where oil has washed ashore. (AP Photo)
An oil soaked brown pelican is bathed in dish soap found to be the best to break down oil deposits at Fort Jackson Wildlife Rehabilitation Center in Buras, Louisiana May 15, 2010. (REUTERS/Hans Deryk)
Veterinarians clean an oil-covered brown pelican at the Fort Jackson Wildlife Rehabilitation Center in Buras, Louisiana on May 15. BP said Monday that about 20 percent of the oil gushing into the Gulf of Mexico is being swallowed up by its insertion tube system, no longer feeding a giant slick off Louisiana. (AFP/Getty Images/File - John Moore)
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 Sunday, May 9, 2010. (AP Photo/Gerald Herbert)
National Oceanic and Atmospheric Administration 72 hour Oil Spill Forcast (5/23/10)
FOURCHON, La. - Health, Safety and Environment workers place oil containment boom on low areas of the beach that are affected by tide, May 14, 2010. The boom is placed in the low areas to prevent oil from getting into the nearby marsh when sea levels are at their highest. (U.S. Coast Guard photo by Petty Officer 3rd Class Patrick Kelley.)
GULF OF MEXICO - Aerial view of oil being burned from the Deepwater Horizon/BP incident, May 19, 2010. Favorable weather conditions allowed burns to total more than nine hours. The burns are part of an effort to reduce the amount of oil in the water and are part of the joint federal, state and BP effort to aid in preventing the spread of oil following the April 20 explosion on the mobile offshore drilling unit, Deepwater Horizon. (U.S Coast Guard photo by Chief Petty Officer John Kepsimelis.)
May 24 Satellite Image (NASA image by Jeff Schmaltz, Caption by Michon Scott.)
Graphical Explanation of BP's Top Kill Strategy
100505-N-6070S-434 GULF OF MEXICO (May. 05, 2010) -- Contracted fishing vessels, Mary and Jace and Gulf Rambler, pull an oil boom during a controlled oil fire in the Gulf of Mexico. Local residents conducted the "in situ burn" in partnership with the U.S. Coast Guard, BP PLC, and other federal agencies to aid in preventing the spread of oil following the April 20 explosion on Mobile Offshore Drilling Unit Deepwater Horizon. (U.S. Navy photo by Mass Communication Specialist 2nd Justin E. Stumberg/Released)
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 of Louisiana near Venice on Tuesday, May 18, 2010. (AP Photo/Gerald Herbert)
A Greenpeace activist steps through oil on a beach along the Gulf of Mexico on May 20, 2010 near Venice, Louisiana. (John Moore/Getty Images)
A ship's wake cuts through a pattern of oil near the site of the Deepwater Horizon oil spill in the Gulf of Mexico Monday, May 17, 2010. (AP Photo/Charlie Riedel)
Oil reaches the marshlands on the northeast pass of the Mississippi Delta May 23, 2010.
A BP cleanup worker rakes oil from the beach on May 22, 2010 on Elmer's Island, Louisiana. Authorities closed the popular tourist beach to the public and media wishing to visit the beach must be escorted by a BP official. (John Moore/Getty Images)
Oil cleanup workers bring in a load of contaminated oil-absorbent booms from the Gulf of Mexico on May 20, 2010 near Venice, Louisiana. (John Moore/Getty Images)
Bridget Hargrove of Baton Rouge, Louisiana, her four-year-old son Ayden and one-year-old daughter, Emma, wade in baby pools away from the oil contaminated Gulf of Mexico on Grand Isle beach in Grand Isle, Louisiana on May 21, 2010. Grand Isle Mayor David Camardelle said the town has closed its beach effective from noon Friday due to the presence of oil on the beach. (REUTERS/Sean Gardner)
Specks of oil stick onto the foot of Maggie Grace Hurdle, 8, of Rosedale, Louisiana, as she walks along a beach in Grand Isle, Louisiana May 21, 2010. (REUTERS/Sean Gardner)
A reddish egret, its legs and tail feathers coated with oil, flies above the water in Grand Isle, Louisiana, May 20, 2010. (U.S. Coast Guard photo/Petty Officer 3rd Class Patrick Kelley)
Natural gas siphoned from the BP oil leak burns off on the Discover Enterprise on May 21, 2010 in the Gulf of Mexico off the Louisiana coast. Ultra-deepwater rigs and other equipment are being assembled at the site, preparing for a procedure called a "top kill" that BP hopes will stop the flow of oil from the well. (John Moore/Getty Images)
A dead Northern Gannet covered in oil lies along Grand Isle Beach in Grand Isle, Louisiana May 21, 2010. A member of Tri-State Bird Rescue and Research tagged the spot of the location of the incident. (REUTERS/Sean Gardner)
Natural gas from the damaged Deepwater Horizon wellhead is burned off by the drillship Discoverer Enterprise May 16, 2010 in the Gulf of Mexico off the coast Louisiana. (Patrick Kelley/U.S. Coast Guard via Getty Images)
Collected oil burns on the water in this aerial view seven miles northeast of the Deepwater Horizon site over the Gulf of Mexico, May 18, 2010. (REUTERS/Daniel Beltra/Greenpeace)
Oil is seen on the surface of the Gulf of Mexico about six miles southeast of Grand Isle, Louisiana May 21, 2010. (REUTERS/Sean Gardner)
Protective booms surround islands near mouth of the Mississippi River south of Venice, Louisiana from an oil spill Monday, May 17, 2010. (AP Photo/Charlie Riedel)
Oil floats around booms and through marshlands of the Mississippi Delta on May 23, 2010. (REUTERS/Daniel Beltra/Greenpeace)
Maura Wood, Senior Program Manager of Coastal Louisiana Restoration for the National Wildlife Federation takes a sample of water in a heavily oiled marsh near Pass a Loutre, Louisiana on May 20, 2010. (REUTERS/Lee Celano)
An oil-stained pelican leaves its nest as oil washes ashore on an island that is home to hundreds of brown pelican nests as well at terns, gulls and roseated spoonbills in Barataria Bay just inside the the coast of Louisiana, Saturday, May 22, 2010. (AP Photo/Gerald Herbert)
A Plaquemines Parish employee lays oil absorbent boom as pelicans leave their nests on an island in Barataria Bay, Louisiana, Saturday, May 22, 2010. (AP Photo/Gerald Herbert)
A Louisiana Fish and Wildlife officer unsuccessfully pursues an oil soaked pelican in Barataria Bay, Louisiana on Sunday, May 23, 2010. (AP Photo/Gerald Herbert)
An oil-soaked pelican takes flight after Louisiana Fish and Wildlife employees tried to corral him on an island in Barataria Bay on Sunday, May 23, 2010. (AP Photo/Gerald Herbert)
Oil is scooped out of a marsh impacted by the Deepwater Horizon Oil Spill in Redfish Bay along the coast of Louisiana, Saturday, May 22, 2010. (AP Photo/Gerald Herbert)
A sheen of oil sits on the surface of the Gulf of Mexico close to the site of the BP oil spill as a boat uses a containment boom to gather the oil to be burned off approximately 42 miles off the coast of Louisiana May 18, 2010 (REUTERS/Hans Deryk)
Crews try to clean an island covered in oil on the south part of East Bay May 23, 2010. (REUTERS/Daniel Beltra/Greenpeace)
A BP cleanup crew removes oil from a beach on May 23, 2010 at Port Fourchon, Louisiana. (John Moore/Getty Images)
An oil-covered crab crawls past a blob of oil on the beach on May 22, 2010 on Grand Isle, Louisiana. (John Moore/Getty Images)
A boat travels between marsh and oil-stained boom near the mouth of the Mississippi River south of Venice, Louisiana Wednesday, May 19, 2010. (AP Photo/Charlie Riedel)
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, Tuesday, May 18, 2010. (AP Photo/Gerald Herbert)
A ship maneuvers and sprays water near a rig in heavy surface oil in this aerial view over the Gulf of Mexico May 18, 2010, as oil continues to leak from the Deepwater Horizon wellhead. (REUTERS/Daniel Beltra/Greenpeace)
These Kemp's Ridley turtles, photographed on May 23rd, 2010, are considered the smallest marine turtles in the world and are being held at the New England Aquarium in Boston, Massachusetts because they cannot be released in the wild, due in part to the Gulf Coast oil spill. (Dina Rudick/Boston Globe)
The sun rises over an oil-soaked beach on May 23, 2010 on Grand Isle, Louisiana. (John Moore/Getty Images)
Greenpeace Senior Campaigner Lindsey Allen attempts to save a small crab covered in oil walking along the shore of the breakwater in the mouth of the Mississippi River where it meets the Gulf of Mexico in Louisiana, May 18, 2010. (REUTERS/Sean Gardner/Greenpeace)
An outboard boat motor breaks up a thick layer of oil as Louisiana Governor Bobby Jindal and Plaquemines Parish President Billy Nungesser toured the oil-impacted marsh of Pass a Loutre on Wednesday, May 19, 2010. (AP Photo/Gerald Herbert)
A shrimp boat is used to collect oil from the Deepwater Horizon oil rig explosion in the Gulf of Mexico in the waters of Chandeleur Sound, Louisiana on May 5, 2010. (AP Photo/Eric Gay)
Volunteers from the
Grassroots Mapping project made a trip in a small boat (upper left) to the the Chandeleur Islands near Louisiana's Misissippi Delta on May 9th, 2010, taking with them a balloon (green tether seen at left) and photo equipment to help document the impact of the oil spill. Public domain photo provided by
Jeff Warren and
Grassroots Mapping project.
Dr. Erica Miller, a member of the Louisiana State Wildlife Response Team, cleans a pelican of oil at the Clean Gulf Associates Mobile Wildlife Rehabilitation Station on Ft. Jackson in Plaquemines Parish, Louisiana, May 15, 2010. (REUTERS/U.S. Navy/Justin Stumberg)
A helicopter flies over surface oil in this aerial view over the Gulf of Mexico, May 18, 2010. (REUTERS/Daniel Beltra/Greenpeace)
A young heron sits dying amidst oil splattering underneath mangrove on an island impacted by oil from the Deepwater Horizon oil spill in Barataria Bay, along the the coast of Louisiana on Sunday, May 23, 2010. (AP Photo/Gerald Herbert)
Boat captain Preston Morris shows the oil on his hands while collecting surface samples from the marsh of Pass a Loutre, Louisiana on Wednesday, May 19, 2010. (AP Photo/Gerald Herbert)
A Louisiana Fish and Wildlife officer unsuccessfully pursues an oil soaked pelican in Barataria Bay, just inside the the coast of Louisiana, Sunday, May 23, 2010 .The island, which is home to hundreds of brown pelican nests as well at terns, gulls and roseate spoonbills, is impacted by oil from the Deepwater Horizon Oil Spill. (AP Photo/Gerald Herbert)
Oil is seen on the tip of the bill of an oil-soaked pelican on an island in Barataria Bay just off the the coast of Louisiana, Sunday, May 23, 2010. The island, which is home to hundreds of brown pelican nests as well at terns, gulls and roseate spoonbills, is impacted by oil from the Deepwater Horizon oil spill. (AP Photo/Gerald Herbert)
Pelicans fly over a boat carrying officials with the Louisiana Department of Wildlife and Fisheries as they sail near oil booms surrounding an island in Barataria Bay on the coast of Louisiana, Sunday, May 23, 2010. The island is home to hundreds of brown pelican nests as well at terns, gulls and roseate spoonbills and is being impacted by oil from the Deepwater Horizon Oil Spill. (AP Photo/Patrick Semansky)
Louisiana Gov. Bobby Jindal, left, and Plaquemines Parish president Billy Nungesser speak while sailing near an island in Barataria Bay on the coast of Louisiana, Sunday, May 23, 2010. The island is home to hundreds of brown pelican nests as well at terns, gulls and roseate spoonbills and is being impacted by oil from the Deepwater Horizon Oil Spill. (AP Photo/Patrick Semansky)
Baby, immature and an adult oil stained pelican are seen on an island in Barataria Bay just inside the the coast of Louisiana, Sunday, May 23, 2010. The island, which is home to hundreds of brown pelican nests as well at terns, gulls and roseate spoonbills, is impacted by oil, seen at waterline, from the Deepwater Horizon Oil Spill (AP Photo/Gerald Herbert)
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, Sunday, May 23, 2010. The island, which is home to hundreds of brown pelican nests as well at terns, gulls and roseate spoonbills, is impacted by oil from the Deepwater Horizon Oil Spill. (AP Photo/Gerald Herbert)
