A dead hermit crabs lies in the water on a beach on Dauphin Island, Ala. An unusual low oxygen zone in Gulf of Mexico waters off the Alabama shore has lasted for more than a month. | Win McNamee/Getty Images

Dead Zone in Gulf Linked to Oil

Oxygen-starved waters that have persisted for more than a month in the Gulf of Mexico are likely due to the BP oil spill, researchers say.

July 9, 2010
3:00 AM EDT