"And seriously
I don't think you guys even read the article.
Quote:
But though it would be heartening to think that the bacteria had digested all the oil, Richard Camilli, an oceanographer at Woods Hole Oceanographic Institution in Massachusetts, said it was also possible that that the oil plume had moved or diluted to a point beyond detection.
Dilution plays a big role in helping break down oil even faster allowing more absorption opportunities of oil onto sediment that's floating in the water which will eventually make it's way to the seafloor. Then you have the salt water waveaction, oil eating micro-organisms, and such that help attentuates the effects of oil on the ocean's ecosystem.