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Zukuft. he says the gulf's oil leading microbes are working twit as fast as predicted. oil expected to linger for a month is gone in half the time. what we do see are marshes growing back fresh green grass and flocks of feeding pelicans, all signs of an ecosystem on the rebound. did you ever think you would fly out over this bay again and see this water this clean? >> no. i thought we would have problems for years. but actually -- >> i'm amazed. this is the first time i've seen it in probably over a month. i can't believe it. getting the public to believe it is a challenge for the coast guard ...

Finally cemented shut. what the clean-up effort could take years, some areas are rebounding a lot more quickly than expected. and they may have some really, really, really small clean-up workers to thank for it. david mattingly takes us on a trip over the marshlands of louisiana this morning. >> reporter: barataria bay was among the first and worst hit areas in louisiana when the oil started coming ashore. you'd never know it looking at it now. i'm only seeing an occasional piece of sheen out here. is that all there is now? >> this is it. >> reporter: this is my second trip over the gulf in le...