Five "golden rules" for safe cave diving

Five "golden rules" for safe cave diving

1. All cave divers should be trained specifically for cave diving - training for ocean diving is not sufficient.

2. Diving deeper than 40 meters in caves should be avoided - the nitrogen in air acts as a narcotic at high pressures, diminishing the diver's judgment and performance.

3. At all times a continuous guideline should be run from open water so that divers can use this to find their way out of the cave.

4. One third of each diver's air should be used to  enter the cave, leaving one third for exiting the cave and one third for emergencies.

5. Every diver should carry  one main light and two backup lights.