TDI, TecRec: Technical Diving including Instructor Courses. Nitrox and Advanced Gas Blender, Advanced Nitrox, Deco Proc. Extended Range, Advanced Trimix, TecRec 40-45-50, Tec Rescue, Trimix, Technical Sidemount, CCR, Type R and T, Technical Videography. Deep Sea Media Production, Exploration and Expeditions, Research, Technical Diving Product Development.