Frozen Methane Bubbles – Canada
These frozen methane bubbles look like winter jewels but you wouldn’t want to be close to one of it if it popped. The bubbles are actually frozen pockets of methane, a highly flammable gas. Methane bubbles form in bodies of water when dead organic matter falls into the water and sinks to the bottom, with bacteria waiting below. Most of the time, methane escaping from the surface of water is relatively harmless but if you happen to be lighting a match at the time one of these bubbles explodes.
Credits to Chip Phillips