The spill of oil was contaminated with 1100 miles coast. A ban on fishing for fishery had been closed for more than a third of all waters of the Gulf of Mexico. Crude oil hit all the U.S. states bordering the Gulf of Mexico. The hardest hit state was to Louisiana, Alabama, Mississippi and Florida. According to the reports of May 25, 2010, 189 Dead Sea turtles were found in the Gulf Coast. At the time, the oil threatened to spill over 400 species of animals, including whales and dolphins. As of November 2, 2010, 6814 dead animals have been collected, including 6104 birds, 609 sea turtles, 100 dolphins and other mammals and reptiles (Ferrier, 1982).
According to the reports the triggers of the Deepwater horizon that led to the accident are human factors, in particular the poor decisions of staff, technical problems and design flaws of the oil platform. Reports stated that the cement pad at the bottom of the well could not hold hydrocarbons in the reservoir. Because of this, gas flowed through it in the drill column and condensated. After that, specialists of BP and Transocean Ltd. misread the testimony of measurements of pressure in the well borehole while checking for leaks. Then for the next 40 minutes, specialists of Transocean Ltd. did not notice that the well was flowing with hydrocarbons. Gas, which could be derived for a board, spread on a drilling platform through the ventilation system and fire detection systems failed to prevent its spread.