They are both toxic, and so is the methane gas. Extremely toxic, and the methane gas, should it ever come on land as a single mass, will kill anything that encounters it.
This is really bad.
62
‘Mabus’ then will soon die, there will come
Of people and beasts a horrible rout:
Then suddenly one will see vengeance,
Hundred, hand, thirst, hunger when the comet will run.
I know, tinfoil city. But still creepy...
WWL, Channel 4 News....
BP Oil Spill - Toxic Gases Spreading Inland Scientist Says Move Out.
http://www.youtube.com/watch?v=4q-msqPnkD4&feature=related