The vast majority of the oil from the BP oil spill has either
evaporated or been burned, skimmed, recovered from the wellhead or
dispersed  much of which is in the process of being degraded. A
significant amount of this is the direct result of the robust federal
response efforts. A third (33 percent) of the total amount of oil released in the
Deepwater Horizon/BP spill was captured or mitigated by the Unified
Command recovery operations, including burning, skimming, chemical
dispersion and direct recovery from the wellhead, according to a Federal Science Report