The Earth goes through periods of warming and cooling, oceans rising and falling. This is obviously a warming period and the release of methane may be symptom.
The article cites a HUGE, NATURALLY OCCURRING source of “greenhouse gases”, which nature manages just fine.
This little data point helps illustrate that the human factor is insignificant and there is no AGW!
The AGW crowd will try to make the nexus. This is one of their catastrophic, tipping-point scary scenarios that they use to justify shutting down modern civilization, that we’ll warm the oceans just that little bit that releases the clathrate and turns Earth into Venus.