And Caldron Bubble

Double, double toil and trouble;

Fire burn, and caldron bubble.

Or in this case, vast quantities of natural gas bubbled into the Gulf of Mexico:

A vast majority of the natural gas that billowed out of BP PLC’s failed well in the Gulf this summer did not escape to the surface and atmosphere. Instead, the gas — including its main component, methane — remained trapped deep underwater, priming the bacterial response to the spill, according to research published online yesterday in Science.

In some places, according to Greenwire, methane concentrations were as high as oxygen concentrations.

That was June.  Maybe the methane is long gone by now.  It would certainly be nice to have more recent data.

BP Oil Spill, Oceans