Charlie learned to dive in 1991 and has been cave diving since 1997. Along with his regular dive buddy, Jon Bernot, Charlie currently holds the world record for penetration in an underwater cave at 8,208 m / 26,930 ft. Charlie is a Director of Karst Underwater Research (KUR) and has participated in numerous KUR exploration and survey projects, including Weeki Wachee, Manatee Springs, M2 Blue, Phantom Springs, Falmouth-Cathedral, and Lineater. Charlie also serves as the Preserve Manager for the National Speleological Society’s Mill Creek Sink Preserve and as the Diving Coordinator for Florida Speleological Researchers’ Diepolder cave system.