The swarm was moving quickly, scales glinting in the gleam of flashlights. They wanted to feed.

But they were a swarm, and they moved as a swarm. An object passing through the middle of them stirred them into a mass confusion, and they paused, hovering, whirling about one another as they tried to get their bearings. They could smell their prey - it was right there! Angry and agitated, they gnashed their teeth, biting into one another. The unfortunate ones dropped in bloody, broken heaps - shredded in two by those deadly teeth.