Oil gusher may be much worse than thought

Scientists Find Giant Plumes of Oil Forming Under the Gulf-

Past oil spills have always been on the surface. So we tend to think of measuring their size that way (by overhead photography).  However this oil gushing out of the deep and much not coming to the surface.  Huge underwater plumes are present unseen and unmeasurable from above.

Scientists Find Giant Plumes of Oil Forming Under the Gulf. By Justin Gillis. New York Times.