An oil spill is the release of a liquid petroleum hydrocarbon into the environment, especially the marine ecosystem, due to human activity, and is a form of pollution. The term is usually given to marine oil รขโ‚ฌยฆ Oil spills preliminary findings show a fatigue crack caused a keystone pipeline oil spill in north dakota the operator of the keystone pipeline says preliminary findings indicate a fatigue crack caused an oil รขโ‚ฌยฆ

They are the release of crude oil or refined petroleum products from tankers, rigs, wells, and offshore platforms.