They're now saying there's as much or more oil available for deep drilling than what was available in on land oil pools. Oil allegedly comes from organic material from thousands of years ago that disintegrated and pooled into petroleum deep underground, and apparently underground miles under the ocean. It suggests that what we now see as ocean was once dry ground with an abundance of the organic material that becomes oil, and long enough ago that as it became oil thousands of feet of ground formed over it, before it sank or was covered over by the sea. It makes me wonder how many times this earth has been terra-formed between civilizations or even species? It also suggests that in this world as long as oil is necessary we'll have oil, once we no longer need it, it'll go away.