Nitrogen narcosis is a condition that affects divers when they descend to depths greater than 30 meters (about 100 feet). It occurs due to the increased pressure underwater, which causes nitrogen, a gas in the air we breathe, to dissolve into the bloodstream. This can lead to symptoms similar to alcohol intoxication, such as impaired judgment, confusion, and decreased coordination. The effects of nitrogen narcosis can vary from person to person and may worsen with depth. It is important for divers to be aware of this condition and to ascend slowly if they experience symptoms. Proper training and safety measures can help mitigate the risks associated with deep diving.