A dead Northern Gannet covered in oil lies along Grand Isle Beach in Grand Isle, Louisiana May 21, 2010.  A month after the well blowout and rig explosion that released the catastrophic spill, sheets of rust-colored heavy oil are starting to clog fragile marshlands on the fringe of the Mississippi Delta, damaging fish, grounds and wildlife. Scientists fear parts of the huge fragmented surface slick will be sucked to the Florida Keys and Cuba by ocean currents.

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