| An oil spill is the release of oil (generally, petroleum) into the natural environment, usually the ocean. Oil means oil of any kind or in any form and includes crude oil, oil refuse, petroleum-related products or by-products, oil mixed in waste, oily ballast, and oily bilge water. |
| •owl:Thing |
| •SpatioTemporalThing |
| •Perdurant |
| •Event |
| •Phenomenon |
| •ContaminationPhenomenon |
| •OilSpill |
| •HazardousPhenomenon |
| •ChemicalHazard |
| •OilSpill |