The explosion of the Deepwater Horizon drilling rig in the Gulf of Mexico on April 20, 2010, and the resulting oil spill began a cascade of effects on the coastal areas of the Gulf and on the wealth of species that inhabit those areas. This report addresses the importance of wetlands in general, the ecology of the coastal wetlands in the Gulf, impacts of oil spills on wetland habitats, response options, the implications of hurricane season for the spill's impacts, and cleanup and recovery issues. The emphasis is on the nearshore environment, although a few species found in deeper waters will be mentioned. In addition, some lessons from past spills such as the Exxon Valdez in Alaska will be discussed, along with issues that may arise as response and recovery transition to restoration of the Gulf.

CDP has created this briefing confident that it will provide a useful further contribution to these policy debates.The briefing is launched alongside its global report ‘The A List: The CDP Climate Performance Leadership Index 2014’. CDP’s Climate Performance Leadership Index (CPLI) is an index highlighting companies that exhibit leadership through their actions to mitigate climate change.