Oil spills kill fish, anphibians, birds, sea mammals, shellfish, and plant life.
Oil spills occur by bad navigation and weather.
In an oil spill the ship is torn open and this allows oil to spill out. The worst oil spill in United States history was on March 24, 1989. The name of the ship was the Exxon Valdez. The accident happened in Prince William Sound, Alaska. The amount of oil spilled was 260,000 barrels.