From time to time, something tiny catches my eye. This guy less than a 1/4" was holding onto the side of a Hammerhead AlgaeFree cleaning magnet. It's a chiton, totally benign/reef-safe. You'll usually see many of these on the rockwork after lights out if you look closely enough. Using a tripod, remote flash, remote trigger, delayed countdown, macro lens with extension tube... this was the best I could get. And it was quietly moving, hence ...