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
Prudhoe Bay oil spill Prudhoe Bay oil spill The Prudhoe Bay oil spill (2006 Alaskan oil spill) was an oil spill that was discovered on March 2, 2006 at a pipeline owned by BP Exploration, Alaska (BPXA) in western Prudhoe Bay, Alaska. Initial estimates of the five-day leak said that up to were spilled over , making it the largest oil spill on Alaska's north slope to date. Alaska's unified command ratified the volume of crude oil spilled as in March 2008. The spill originated from a hole in a diameter pipeline. The pipeline was decommissioned and later replaced with a diameter pipeline with