[Red Badger]

"Once you expose a huge amount of underwater sediment to the atmosphere, two very bad things happen — a huge amount of carbon in the sediments is released and also methane. Once (methane) hits the atmosphere it's the most efficient greenhouse gas on the planet," he said.

tHEY WERE KILLED BY A GIANT fART?.....

[Sacajaweau]

I'd guess that the tususami released more methane than a billion SUVs in a hundred years.