Photographer Ariel Leshinsky of Beersheba, Israel, has spent a couple of years photographing starling murmurations, those mesmerizing, swarm-like flocks. But Leshinsky adds a dose of creativity: he aims to capture and select moments when the random swarms look like recognizable things... like the "seal" in the photo above.
For her projects titled Égarements and Quotidien, French photographer Cerise Doucède creates elaborate scenes by hanging objects from the ceiling, creating swarms that look computer generated but aren't.
Photographer Thomas Jackson has an ongoing project titled Emergent Behavior that consists of surreal photographs of swarms of various things (e.g. leaves, plastic cups, ping pong balls) in various locations. The images aren't computer generated, but are rather composite images combining a number of photographs -- probably similar to the "flock of phones" tutorial that we featured a while back.