"The undersea plumes that BP and the feds denied are still there."

BP’s 22-Mile-Long Monster. Excerpts:

"What they found was like dipping a drinking cup repeatedly into Loch Ness and coming up with enough body parts to infer the existence of a monster: there is a continuous, unbroken plume of hydrocarbons about 3,300 feet down, stretching southwest from the well for some 22 miles. The scientists suspect it is even longer, but they had to stop sampling when Hurricane Alex blew in. Still, said Camilli, “we’ve shown conclusively not only that a plume exists, but also defined its origin and ... structure. Until now, these have been treated as a theoretical matter”—especially by BP and even the government, which for weeks denied the existence of the plumes. (In late June and again in late July, however, the National Ocean and Atmospheric Administration released results of subsurface monitoring by several of its research vessels, finding a “cloud of diffuse oil at depths of 3,300 to 4,600 feet near the wellhead.”)"
And:
The plume has “persisted for months without substantial biodegradation,” the scientists report in an account of their discovery in tomorrow’s issue of the journal Science. The plume measured 650 feet high and, in certain places, more than 1.2 miles wide.