[nerdtalker]

Remember that in the case of the gulf oil spil, Corexit was used in a way that it wasn't ever specifically engineered for (based on their own datasheets for 9500). Instead, it was directly inserted into the stream just a meter or so above the wellhead, underwater. There are videos of this from the ROV streams, and corroborated by other sources (eg NYT: http://green.blogs.nytimes.com/2011/08/26/impact-of-gulf-spi... Wiki: http://en.wikipedia.org/wiki/Deepwater_Horizon_oil_spill#Use... )

The result was formation of these subsurface plumes that the author talks about.