In April 2010 , the offshore oil drilling rig '' Deepwater Horizon '' , operated by BP P.L.C. , exploded in the Gulf of Mexico and triggered the largest accidental oil spill in history . In cooperation with Florida State University , SkyTruth estimated the amount of oil flow from the damaged well-using satellite imagery and determined based conservative estimates using the visible surface slick that the flow of oil was between 5 and 25 times greater than BP reported . SkyTruth was the first organization to challenge BP 's claims , and continued to monitor and document flow from the well until it was successfully sealed
largest accidental oil spill in history
Deepwater Horizon oil spill
Skytruth