The “Bodyguard” and “Field of Dreams” actor is in a field you probably wouldn’t expect.

According to Gawker, Costner was inspired to create a device that would separate water from oil after the Exxon Valdez oil spill in 1989 and his own film “Waterworld.” In 2010, BP bought 32 units to help clean up the disaster left by the oil spill in the Gulf of Mexico. The devices can separate 200 gallons of oil from water a minute, according to The New York Times. Business Insider reported that Costner made $15 million from the deal.