Marine scientists have discovered a massive new plume of what they believe to be oil deep beneath the Gulf of Mexico, stretching 22 miles from the leaking wellhead northeast toward Mobile Bay, Alabama.
David Hollander, associate professor of chemical oceanography at the school, says the thick plume was detected just beneath the surface down to about 3,300 feet. He says it's more than 6 miles wide.
Scientists say they are worried the undersea plumes may be from chemical dispersants used to break up the oil a mile under the surface.
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