Oil spewing from BP's ruptured undersea well in the Gulf of Mexico has now reached the US coast, choking marshlands and fragile marine life.
Amid the massive mop-up operation, Al Jazeera's John Terrett takes a boat ride around southern Louisiana's coast.
The thick slick is already causing the local economy and the environment massive damage, but many fear the worst is yet to come. (May 22, 2010)
