Surveys show that the underwater plume of Deepwater’s oil is being degraded and diluted, now at low concentrations, but a ‘marine snow’ of oily sediment coats the seafloor.
Wellhead region and near shore sediments made up of grayish muddy clay and a thin layer of orange-brown oil of varying thickness. Dead worms, shrimp and other bottom-dwelling organisms in the samples. (nm – nautical miles)
