The quantity of oil spilled during accidents has ranged from a few hundred tons to several hundred thousand tons ( e.g. , Deepwater Horizon oil spill , SS Atlantic Empress , Amoco Cadiz ) . Smaller spills have already proven to have a great impact on ecosystems , such as the '' Exxon Valdez '' oil spill
Deepwater Horizon oil spill
Deepwater Horizon oil spill
Petroleum