Stanley Sevin knew it was time to have the difficult conversation with his parents when he saw the oil sheen shimmering under his family’s dock on the bayou. He had been putting it off ever since the Deepwater Horizon rig exploded in April. “Sell the house and go start fresh somewhere else,” Mr. Sevin, 24, pleaded with his family, shrimpers of Cajun ancestry. “The business is dead and this life is over.” For the Cajuns of South Louisiana...[,]what they got in return for their tolerance of living in what early cartographers called No Man’s Land was a world-class bounty of seafood and freedom in an environment of striking natural beauty. Now that is in jeopardy...While Cajuns on the coast may be able to hold on for now, the question of what happens in the long run remains. [refers to BP]