Owner and Technical Instructor Trainer at Ocean Zone Divers in Phuket, a multi-agency technical diving centre teaching NAUI, TDI, IANTD, DSAT, and CMAS from diver through instructor level. A CMAS 2-star instructor since 1994 and PADI instructor since 1998, with around 40 certifications including Full Cave, Advanced Wreck, Extended Range, Trimix to 75m, and instructor ratings on the Megalodon and MkVI Discovery/Se7en rebreathers. Previously taught at Blue Label Diving and Dive Butler International in the Maldives.