As we all know, there's more to the BP spill than meets the eye. The extent of the damage wasn't just the thousands of birds that got oiled -- it goes much deeper. A good way to understand just how deep it goes is to play around with NRDC's cool interactive graphic of the spill. NRDC explains: "Only eight percent of the approximately 170 million gallons of crude oil that flooded into the Gulf of Mexico was removed or burned. The rest was put into the environment; it dispersed or dissolved into the water column, floated to the surface, was deposited on the coast, or sank to the bottom."