A core sample from the seafloor of the Gulf of Mexico shows a 2-inch layer of oily material. Researchers are finding oil on the seafloor miles away from the blown-out BP well.  Though researchers have yet to chemically link the oil deposits to the BP well, "the sheer coverage here is leading us all to come to the conclusion that it has to be sedimented oil from the oil spill because it's all over the place," says one scientist. Courtesy of Samantha Joye hide caption

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Courtesy of Samantha Joye

Scientists Find Thick Layer Of Oil On Seafloor

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BP Report Shares Blame For Rig Explosion

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BP Issues Report On Gulf Oil Spill Disaster

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Scientists: Bacteria Consuming BP Oil

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Most Gulf Oil Is Out Of Site But Not Out Of Mind

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BP Says 'Static Kill' Is Complete

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BP: Mud Pumped Into Gulf Well Holds Back Oil

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Hydraulic Leak Delays Test Ahead Of 'Static Kill'

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A Pleurosigma, a type of phytoplankton in the ocean. Phytoplankton generate more than half of the Earth's oxygen. Harry Taylor/Nikon Small World hide caption

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Harry Taylor/Nikon Small World

The Food Chain's Weak Link: Tiny Ocean Plants Dying

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BP Nears Permanent Fix For Leaking Oil Well

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New Cap Stops BP Gulf Oil Leak

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BP Faces More Test Delays On Well Cap

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BP Delays Critical Tests On New Well Cap

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BP Waits To See If New Cap Provides Tighter Seal

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