Gulf Oil Spill cmoing to an end?

A so-called "static kill" applied to the Deepwater Horizon well that burst out the huge amount of crude oil seems to be a success and President Obama said the disaster is "finally close to coming to an end."

Prior to this, NOAA announced in a report that almost 75% of the spilled oil is gone thanks to various causes, which is summarised as follows.

• 33% -- Clean-up efforts by human acctivities
• 25% -- Evaporated or dissolved
• 16% -- Dispersed

The report says  that much of the rest is so diluted that it does not seem to pose much additional risk of harm.

 But wait. Is it really over? In response to this report, many scientists express concerns. Just because you can't see any remaining oil on the surface of the ocean in your vicinity, that doesn't necessarily mean no more harm. There may be bunch of oil beneath beaches or sunk onto the sea floor. It is also possible that a large amount of oil is just somewhere else, transported by complex currents, at the time of your investigation. More noteworthy is that we don't know yet very well what the long-term effects of the oil taken into the food chain are. A scientist in the above link points out that this disaster should be considered as a "3-D catastrophe", not just a 2-D problem.