TDI technical instructor with 23 certifications including Full Cave, Mine Diving, Extended Range, and instructor-level O2ptima CM rebreather ratings. Recently certified as an O2ptima CM CCR Instructor under the mentorship of Por Parasu Komaradat, and has taught CCR and cave courses in Krabi -- likely through Krabi Scuba Club, whose own 'Rec Tec Cave Mine Nitrox Trimix' offering (twinsets, stages, rental tech gear, nitrox, trimix, sorb) matches his course description closely. Part of the same Thai mine-exploration circle as Por Parasu and Mikko Paasi's teams.