Charles Mazel, PhD, is the pioneer of the modern era of night diving to explore fluorescence, including development of the equipment to see and record the phenomenon. He is a Boston Sea Rover and the founder of NIGHTSEA, the first company to provide lights and camera accessories for underwater fluorescence. Charlie made his first fluorescence dives as early as the mid-1970’s but it wasn’t until over a decade later that he began to pursue it in earnest, to the point where it took over and changed his life. Along the way he was fortunate to learn about the history of earlier explorations of fluorescence and to meet some of the people who went before him.