DIR-Mexico is dedicated to quality cave diving instruction and guiding in Mexico's Yucatan Peninsula.

Description of facilities for training at technical dive training centre in the UK.

Information about the physics of technical diving, including the influences of inert gases on decompression and diver insulation. Decompression calculations using the Varying Permeability Model (VPM) bubble model.

Information on trimix and other mixed gas diving.

Technical, nitrox, cave diving and other courses offered by this organization based in Lake City, Florida.

Sells oxygen sensors for all types of rebreathers and O2 analyzers. They also sell an oxygen analyzer kit that includes the sensor.

UK based technical diving instruction and access to hard to find dive equipment. Online Equipment configuration details

Cavern and cave diving in Tulum, Mexico.

Scuba Diving and Technical Diving Courses. Gear Sales, Hire and Service. South East Queenslands Deep Wreck diving specialists. A full range of technical courses for three different certification agencies.

Digital instruments for technical diving, nitrox trimix diving and rebreather diving.