The Virtual Fish Tank is one of the coolest interactive exhibits I’ve ever seen. It’s situated in the Boston Science Museum, a giant wall of screens that are windows into the tank (a screen tucked away on one side give a longitudinal view of the tank). The tank is populated by fish whose characteristics — hunger, aggression, friendliness, etc — are determined by visitors using nearby kiosks. Motion-sensors tell the tank when someone is “tapping on the glass,” and the fish react appropriately. Using the Web interface and webcam feed at virtualfishtank.com, you can design your own fish for release into the tank, in real time, tagged and ready to swim with the fish that are being designed by the museum’s meatspace visitors.LinkDiscuss