In recreational diving, what is one way divers manage oxygen exposure levels?

Limiting dive duration is an effective way to manage oxygen exposure levels during recreational diving. The body absorbs oxygen from the breathing gas as a function of time and pressure. In enriched air diving, where the oxygen content is higher than in normal air, prolonged exposure increases the risk of oxygen toxicity, which can lead to serious health issues such as convulsions or other neurological effects.

By restricting how long a diver stays at depth, the total amount of oxygen absorbed is minimized. This helps to safeguard against exceeding safe oxygen exposure limits, allowing divers to enjoy greater safety and reduced risk while engaging in their diving activities.

While other methods like using larger tanks, diving shallower, or increasing surface intervals can also contribute to overall dive safety, they do not specifically target the management of oxygen exposure in the same direct manner as limiting dive duration.