Austrian cave explorer and majority co-owner and Training Director of ProTec Dive Centers, one of the world's leading cave, technical, and rebreather training facilities. Full-time diving professional since age 19, working in Egypt from 2003 before moving into cave diving in Mexico's Riviera Maya in 2005. A PSAI Instructor Trainer and Instructor Trainer Evaluator, and a partner and Training Director of KISS Rebreathers -- co-designer, with XDEEP's Piotr Czernik, of the KISS Sidewinder 2. An internationally recognized cave explorer with major projects across Mexico, the Dominican Republic, Haiti, Madagascar, Thailand, Laos, and the Philippines, including the discovery of Africa's longest known submerged cave system, Anjanamba, in Madagascar.