 3. HERRING
Talk about a mob scene! Herrings usually travel with over 4 million others at any given time, creating one of the densest schools in the world, which stretches over a mile long. The noise factor comes into play with their preferred method of communication: fast repetitive ticks, or FRTs, which is a fancy scientific way of saying "breaking fish wind." Yes, the herrings emit gas from their bottoms to talk with each other as well as scare off predators, but it's at a frequency too low for humans to ever hear. If it were audible to us, it would sound like a jet taking off — kind of hard to pretend like that was just your shoe, huh?
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