During your first open water dive you'll practice line handling, reel use and emergency procedures without entering a cavern. But, for your next three dives, you're headed into the cavern, staying within the light zone and 40 metres/130 feet total distance of the surface.
You'll also cover the following:
- Planning, organization, techniques, problems and hazards of cavern diving.
- Special equipment use, such as lights, guidelines, reels and redundant breathing systems.
- Proper body position, buoyancy control, air management and emergency procedures.
- Cavern diving hazards such as silting, line problems, disorientation and emergencies.