Which statement about fuel spills is true?

A spill causing a sheen must be reported because it indicates that the substance has the potential to harm the environment and affect aquatic life. Sheens are often indicative of oil or other hazardous materials dispersing on the water's surface, which can have detrimental effects on ecosystems, wildlife, and water quality. Reporting such spills is essential for ensuring proper containment and cleanup, minimizing environmental damage, and complying with legal requirements. This aligns with regulations that prioritize environmental protection and public safety, making it critical for boaters and operators to be aware of their responsibility in instances of fuel spills.