The oil spill was the largest in U.S. history. In April 2010, the Deepwater Horizon drilling rig exploded and sank. Oil gushed into the Gulf of Mexico from a deep ocean well. For months, the energy company BP tried to control the leak. More than four million barrels of oil flowed into the Gulf before the well was stopped. Fishers, shrimpers, and many others along the Gulf coast lost their income as polluted water prevented fishing and stifled tourism.