A properly placed underwater tactical low level nuke could end the problem.

Matter of fact, the above scenario is in the US government's data on the subject, in the "what if" scenario section.

The properly placed and detonated underwater tactical nuclear explosion has the capability of fusing sand, rock, etc. into a permanent PLUG CAP on the sea floor.

"Low level" tactical nuke of 12 kiloton or less. That is half the power of the first atomic bomb ever used against our fellow humans. And a lot less than stuff detonated in the ocean in past times for testing.

However bad the nuke may be for the environment, it is a lot less impact than the current oil and gas situation.

With so many people scared to death already due to their own scientific and engineering ignorance on such subjects, however, it is unlike that an administration interested more in the political than the fundamental is going to allow such solution to the problem, though.

"Never waste a good crisis" -- That's what they actually said.

People more concerned with punishing than solving the problem.

Doesn't make much sense to me.
_________________________
"Keep listening. Never become so self-important that you can't listen to other players. Live cleanly....Do right....You can improve as a player by improving as a person. It's a duty we owe to ourselves." --John Coltrane

"You don't know what you like, you like what you know. In order to know what you like, you have to know everything." --Branford Marsalis