Ribbons of oil that have leaked from the Deepwater Horizon well in the Gulf of Mexico are silver against the light blue color of the adjacent water in this image of the tip of the Mississippi River Delta on May 24, 2010.
Five days following an oil spill in San Francisco Bay on November 7, 2007, radar imagery showed oil slicks across broad areas of the bay as well in the open waters of the Pacific Ocean.
Among the most productive oil fields in the United States, Elk Hills Oil Field in California presents a complicated surface in this image from March 7, 2009.