There is so much oil under the sand, mud and oyster shells that tar balls may be washing up for months, if not years.
In many places, tar balls and black sticky patties that once littered the shoreline are gone. The sand is no longer stained brown, and the surf is clear of crude. Beaches that once looked like excavation sites are returning to normal.
At the spill's height, 47,000 people and over 10,000 vessels were working on the disaster. Now, the army of spill responders is down to 6,000 and the fleet consists of about 380 vessels.
The Associated Press contributed to this report