Efforts to stem the Deepwater Horizon oil spill Efforts to stem the Deepwater Horizon oil spill Efforts to stem the "Deepwater Horizon" oil spill were ongoing from the time that the "Deepwater Horizon" exploded on 4/20/2010 until the well was sealed by a cap on July 15, 2010. Various species of dolphins and other mammals (61 casualties), birds (2,095 casualties), and the endangered sea turtles (467 casualties) have been killed either directly or indirectly by the oil spill. The "Deepwater Horizon" spill has surpassed in volume the 1989 "Exxon Valdez" oil spill as the largest ever to originate in U.S.-controlled waters; it is comparable to the 1979 Ixtoc
Oil spill governance in the United States important role in creating external networks for governing oil spills in the U.S. international treaties when signed by the U.S. are on the same level as federal law, hence signatory parties must implement domestic legislation to reflect the agreement. This mechanism helps to engineer a number of federal laws governing oil spills such as the intervention on the High Sea Act of 1974. International conventions serve a key role in developing standards for oil carrying vessels from different nations into the U.S. The two major conventions which have contributed to oil spill governance are the 1969 International Convention Relating to