What phenomenon can occur due to increasing pressure during a dive?

Nitrogen narcosis is a phenomenon that occurs when divers experience an intoxicating effect due to the increased pressure at depths greater than approximately 30 meters (100 feet). As divers go deeper, the partial pressure of nitrogen in their breathing gas increases. This elevated pressure can affect the central nervous system, leading to symptoms similar to those of intoxication, including impaired judgment, decreased coordination, and altered mental state.

Unlike the other options, nitrogen narcosis specifically relates to the physiological impact of pressure on gas behavior within the body, highlighting the need for divers to be aware of the risks associated with deeper dives. Improved eyesight, enhanced buoyancy control, and rapid decompression do not accurately reflect the direct consequences of increased pressure experienced during a dive and are either unrelated or refer to different diving issues. Understanding nitrogen narcosis is crucial for maintaining safety and awareness while diving.