Gulf of Mexico Oil Slick Images: Frequently Asked Questions
http://earthobservatory.nasa.gov/Features/OilSlick/

NASA


This page from the NASA Earth Observatory shows imagery of the 2010 Deep Water Horizon blowout and oil leak with information on NASA is able to provide information on the extent of oil slicks using satellite images.

This resource is referenced here:
Subject: Environmental Science:Oceans and Coastal Resources, Geoscience:Oceanography:Marine Resources
Resource Type: Scientific Resources:Overview/Reference Work
Special Interest: GIS