Cetacean oil is a type of oil derived from the blubber of marine mammals known as cetaceans, which include whales, dolphins, and porpoises. Historically, this oil was used for various purposes, including lighting lamps, making soap, and as a lubricant. The extraction of cetacean oil has significantly declined due to conservation efforts and regulations aimed at protecting these species. The use of cetacean oil has raised ethical and environmental concerns, as many cetacean species are endangered or threatened. Today, alternatives such as plant-based oils and synthetic products are more commonly used, reducing the demand for cetacean oil and promoting the conservation of marine ecosystems.