“One Hundred and Eight”, 2010 by Nils Völker.

“One Hundred and Eight is an interactive wall-mounted Installation mainly made out of ordinary garbage bags. Controlled by a microcontroller each of them is selectively inflated and deflated in turn by two cooling fans.

Although each plastic bag is mounted stationary the sequences of inflation and deflation create the impression of lively and moving creatures which waft slowly around like a shoal. But as soon a viewer comes close it instantly reacts by drawing back and tentatively following the movements of the observer. As long as he remains in a certain area in front of the installation it dynamically reacts to the viewers motion. As soon it does no longer detect someone close it reorganizes itself after a while and gently restarts wobbling around.”

(Source: creativeapplications.net)