http://www.treehugger.com/files/2010/05/nasa-satellite-photo...
This show that the massive arm is going with the Gulf Loop Current:
http://news.discovery.com/earth/oil-spill-gulf-loop-current....
What is interesting and not in the full photo, is where does the "Gulf Loop Current" go? A little googleing shows this image: http://www.texaspelagics.com/GOMocean.html
But where do you think it is going to end up after is leaves to the right of the image.. Further up the coast of Florida I assume?!?