“Two days after the April 20, 2010 explosion that killed 11 and injured 16, the Deepwater Horizon oil rig sank. During the five months it took to seal the Macondo well 1,500 meters below the surface, nearly 5 million barrels of oil gushed into the ocean. … Researchers [have now] reported the first solid evidence that some of this oil settled on the seafloor.” (http://news.mongabay.com/2014/1124-urton-ucsc-deepwater-horizon-pollution.html#sthash.jV7SEpol.dpbs)

A rare opportunity to see the effect of waxing the seafloor.