What is the maximum recommended depth for recreational scuba diving?

The maximum recommended depth for recreational scuba diving is typically 40 meters (130 feet). This depth is established based on several factors, including the physiological limits of the human body, the complexities of managing gas absorption and elimination, and the increased risks associated with deeper dives.

At this depth, divers may start to experience significant physiological challenges such as increased nitrogen narcosis and oxygen toxicity, making it crucial to have proper training and experience. This depth also usually aligns with the limits set by most recreational diving agencies to ensure divers can manage their safety effectively and maximize their enjoyment of the underwater environment.

Diving at 40 meters requires careful planning, including the appropriate use of dive tables or computers, and an understanding of the necessary ascent rates and safety stops to avoid decompression sickness. Although deeper dives are possible, they typically require advanced training and specialized equipment, which is why 40 meters remains the standard threshold for recreational divers.