With over 45 years of diving experience, Tysall has led multiple scientific/research expeditions around the world, including the first SCUBA exploratory dives on the SS Edmund Fitzgerald in Lake Superior, the USS Atlanta off Guadalcanal in the Solomon Islands, and the first cave exploration and geologic sampling conducted at the bottom of the Great Blue Hole of Belize. He served stateside as the Executive Officer and longest-serving Commanding Officer of the U.S. Army’s 627th Heavy Dive Team. He is one of the founders of the Cambrian Foundation, and he is also the founder and president of Benthic Technologies, Inc., a consulting firm that specializes in underwater applications and technology. Tysall has served as Diving Safety Officer for Texas A&M University and corporate DSO for SeaWorld Parks and Entertainment overseeing full-spectrum dive operations for both organizations worldwide. Tysall has earned instructor trainer ratings from NAUI, ANDI, IANTD, NSSCDS, NACD, SDI, SSI, and TDI. In addition to these certifications, Tysall serves on a variety of technical advisory boards for NOAA and other scientific research agencies both in the United States and abroad. Tysall currently serves as the Training Director for NAUI Worldwide.