Jump to navigation
Transparent or iridescent sheen or oily film. An example of film is seen here as an oil sheen floating on water.
Visible oil that cannot be scraped off with a fingernail. An example of stain is seen here as splotches on cobbles.
Visible coating of oil less than 0.1 centimeter thick; can be scraped off with a fingernail. An example of coat is seen here as a thin layer of oil on riprap.
Oil or mousse more than 0.1 and less than 1 centimeter thick. An example of cover is seen here as oil covering a sand beach surface and running into a small trench.
Fresh oil or mousse more than 1 centimeter thick. An example of pooled oil is seen here as an accumulation of oil around the large boulder in the foreground.
Website owner: Office of Response and Restoration | NOAA's Ocean Service | National Oceanic and Atmospheric Administration | US Department of Commerce | USA.gov