I remember where I saw the oil floats on water experiment. My kids 5th grade science class!
Density—Sink and Float for Liquids | Chapter 3: Density | Middle School Chemistry
Put simply: 1) Oil does not mix with water, 2) Oil floats on water.
17% of the spill was directly recovered. 32% was burned, skimmed or naturally dispersed. 25% EVAPORATED. 26% was "other" - mostly meaning it couldn't be found. (According to NOAA)
NOAA - Federal Interagency Group Issues Peer-Reviewed 'Oil Budget' Technical Documentation
And to put it into further perspective - what couldn't be found amounts for less than 1 month's natural seepage into the Gulf. And the scientists assume that some very, very fat, happy oil eating microbes finished off the rest.
Fun times? Hardly, 11 guys died - but my point is that when people wave about opinions about "big business sticking it to the little man" and "greedy profiteers" and other such nonsense not based on fact, you have business reconsider their commitment to investing in your town, your country and YOUR SPORT.