Some of these larger releases are due to shifting along the ocean floor in the arctic, exposing previously buried hydrates.
There has been some success in drilling into these formation to produce the methane, but it is still new and the technology is being developed.
http://www.freerepublic.com/focus/f-news/2436650/posts
http://www.freerepublic.com/focus/f-news/2455581/posts
The potential for this source is very large, if it can be economically developed. The recent successes in the shale gas production have postponed most of the interest in methane hydrates for the time being.
I should have read all the responses first.
Or you could research creation science [specifically Dr. Walt Brown PhD and his hydroplate theory] for a very interesting reason why we have so much coal, oil, and methane deposits - how quickly they formed and possibly even why their are deposits of same throughout our solar system.
Center for Scientific Creation - In the Beginning: Compelling Evidence for Creation and the Flood
http://www.creationscience.com/onlinebook/IntheBeginningTOC.html