What type of diving requires a longer waiting period before flying?

Deep-water diving necessitates a longer waiting period before flying due to the increased risks associated with the higher pressures that divers experience at greater depths. When a diver descends to deep water, their body absorbs more nitrogen under pressure. During ascent, if a diver does not allow sufficient time for the nitrogen to safely dissipate from their bloodstream before flying, the risk of decompression sickness (also known as "the bends") increases significantly.

The waiting period recommended for deep-water diving is generally longer compared to other types of diving, such as shallow-water diving or night diving, because the physiological effects and risk factors differ with depth. Shallow-water divers experience less pressure and consequently, generally require a shorter wait time. Controls ascent diving, while important for safety in managing ascent speeds, does not inherently necessitate an extended pre-flight wait. Night diving, like shallow-water diving, typically doesn't involve the same increased nitrogen absorption found in deep-water contexts. Therefore, deep-water diving is recognized for requiring the most extended wait before air travel to mitigate the risks of impaired aerodynamics and the effects of nitrogen saturation.