What advantage does greater oxygen pressure at depth provide to divers?

The advantage of greater oxygen pressure at depth primarily lies in its ability to reduce nitrogen uptake and enhance performance. When a diver descends, the partial pressure of gases in the breathing mixture increases. Oxygen becomes more available due to the higher pressure, which helps to mitigate the effects of nitrogen absorption, particularly during deeper dives.

This phenomenon can lead to reduced nitrogen narcosis and less risk of decompression sickness upon ascent because a diver who uses a nitrox mix with a higher oxygen content will absorb less nitrogen compared to using air. The increased availability of oxygen also means that divers may enjoy improved physical performance and increased stamina, which can be especially beneficial during more demanding dives.

As a result, divers equipped with the knowledge and skills to manage varying oxygen pressures can effectively use them to their advantage in reducing nitrogen uptake and enhancing their overall dive experience.