The Development Driller II, a drill ship working on a secondary relief well, is active at the Deepwater Horizon well site in the Gulf of Mexico off Louisiana, USA 18 July 2010. While BP is evaluating a new containment cap that they hope will allow them to eventually shut down the blown well, oil from the Deepwater Horizon leak in the Gulf of Mexico continues to reach shore, affecting beaches, marshes and wildlife along the coasts of Louisiana, Mississippi, Alabama and Florida. EPA/ANN HEISENFELT
The Helix Producer, top, which normally flares gas and collects oil, sits idle as evaluation of the capped well continues at the Deepwater Horizon well site in the Gulf of Mexico off Louisiana, USA 18 July 2010. While BP is evaluating a new containment cap that they hope will allow them to eventually shut down the blown well, oil from the Deepwater Horizon leak in the Gulf of Mexico continues to reach shore, affecting beaches, marshes and wildlife along the coasts of Louisiana, Mississippi, Alabama and Florida. EPA/ANN HEISENFELT
A trail of oil sheen floats near a work vessel at the Deepwater Horizon well site in the Gulf of Mexico off Louisiana, USA 18 July 2010. While BP is evaluating a new containment cap that they hope will allow them to eventually shut down the blown well, oil from the Deepwater Horizon leak in the Gulf of Mexico continues to reach shore, affecting beaches, marshes and wildlife along the coasts of Louisiana, Mississippi, Alabama and Florida. EPA/ANN HEISENFELT
Clean-up workers carry shovels and bags of oil across the beach in Grand Isle, Louisiana, USA 19 July 2010. While BP is evaluating a new containment cap that they hope will allow them to eventually shut down the blown well, oil from the Deepwater Horizon leak in the Gulf of Mexico continues to reach shore, affecting beaches, marshes and wildlife along the coasts of Louisiana, Mississippi, Alabama and Florida. EPA/ANN HEISENFELT
The beaches remain closed as waves continue to wash oil on shore in Grand Isle, Louisiana, USA 19 July 2010. EPA/ANN HEISENFELT
The Development Driller III, a drill ship working on the main relief well, is active at the Deepwater Horizon well site in the Gulf of Mexico off Louisiana, USA 18 July 2010. While BP is evaluating a new containment cap that they hope will allow them to eventually shut down the blown well, oil from the Deepwater Horizon leak in the Gulf of Mexico continues to reach shore, affecting beaches, marshes and wildlife along the coasts of Louisiana, Mississippi, Alabama and Florida. EPA/ANN HEISENFELT
A small island is surrounded by absorbent boom near Grand Isle, Louisiana, USA 18 July 2010. While BP is evaluating a new containment cap that they hope will allow them to eventually shut down the blown well, oil from the Deepwater Horizon leak in the Gulf of Mexico continues to reach shore, affecting beaches, marshes and wildlife along the coasts of Louisiana, Mississippi, Alabama and Florida. EPA/ANN HEISENFELT
The Development Driller III, a drill ship working on the main relief well, is activeat the Deepwater Horizon well site in the Gulf of Mexico off Louisiana, USA 18 July 2010. EPA/ANN HEISENFELT
The Discoverer Enterprise oil containment vessel, which is idle while the well is capped, is shown in the foreground as oil sheen floats on the water at the Deepwater Horizon well site in the Gulf of Mexico off Louisiana, USA 18 July 2010. While BP is evaluating a new containment cap that they hope will allow them to eventually shut down the blown well, oil from the Deepwater Horizon leak in the Gulf of Mexico continues to reach shore, affecting beaches, marshes and wildlife along the coasts of Louisiana, Mississippi, Alabama and Florida. EPA/ANN HEISENFELT
People walk their dog on a virtually empty beach near oil caught in the ripples of the sand in Bay St. Louis, Mississippi, USA 17 July 2010. While BP is evaluating a new containment cap that they hope will allow them to eventually shut down the blown well, oil from the Deepwater Horizon leak in the Gulf of Mexico continues to reach shore, affecting beaches, marshes and wildlife along the coasts of Louisiana, Mississippi, Alabama and Florida. EPA/ANN HEISENFELT