Which whale products were replaced by petroleum, vegetable oils, steel, and gas lamps?

The historical decline of the whaling industry was driven by the development of various substitutes that rendered whale products obsolete.12

• Petroleum: The discovery of petroleum in 1859 provided a source for kerosene, which replaced sperm oil and spermaceti candles as the primary illuminants.32
• Gas lamps: Coal gas was used to displace whale oil lamps for city and private lighting during the mid-19th century.3
• Vegetable oils: By the late 1930s, vegetable oils became a practical alternative to hardened whale oil in the production of margarine and soap.42
• Steel: Innovations such as steel-boned corsets replaced products derived from baleen, which was historically used for its flexibility in fashion and other applications.2

While these shifts were significant, it is important to recognize that the transition away from whale products was a critical step in reducing the intense human predation that threatened whale populations globally.12