Study: 'Toxic Levels' of Oil Spreading Along Underwater Gulf Canyon 3.67K Jeff Neumann 08/17/10 04:11AM Filed to: Surprises Surprises oil spill Bp deepwater horizon gulf of mexico Environments Studies Remember when the government said "there's absolutely no evidence" of "any significant concentration of oil" left in the Gulf of Mexico a couple of weeks ago? Surprise! There's a lot of oil left, and it's spreading along the ocean floor.