"Oil-contaminated" refers to any environment or object that has been polluted by oil. This can happen when oil spills occur in oceans, rivers, or lakes, affecting marine life and ecosystems. It can also refer to soil or water that has been tainted by oil leaks from vehicles or industrial sites, making it unsafe for plants, animals, and humans. When something is oil-contaminated, it often requires special cleanup efforts to remove the harmful substances. This process can involve using bioremediation techniques, which utilize microorganisms to break down the oil, or physical methods like skimmers to collect the oil from the surface of the water.