According to a May 20 report from New York Daily News, Kevin Costner spent years and millions of dollars perfecting a device that cleans oil from seawater and British Petroleum gave the okay to test six of Costner's units. Costner's high-speed centrifuge machine, named Ocean Therapy, is placed on a barge and sucks in large quantities of polluted water, separates out the oil and spits back 97% clean water.
(Source: New York Daily News)