There's a sentence you don't hear often

Discovery Channel :: News - Animals :: Whales Slap Flatulent Prey

From the above story:

Norwegian killer whales slap their tails underwater to disorient and kill herring, which sometimes defend themselves from the assault by disappearing under the cover of their own bubbly flatulence, according to a new study....

While whales often are successful, some herring escape. The study's authors perhaps say it best: “Farting may save their lives.”...

Further down, how can you not chuckle at this comment:

As for the herring flatulence, Diachok agreed the fish may do this to facilitate escape, but he said it also might just be inadvertent.