What an underwater oil leak looks like

This footage was taken at the Deepwater Horizon site on May 11. The Joint Investigation Committee says that you're looking at both oil and gas coming out of the broken pipe. Bit of conjecture on my part: I think what we might be seeing here is a methane gas bubble briefly interrupting the flow of oil, which is pretty eerie to watch, given that this was also the cause of the explosion that lead to the oil spill in the first place.