What could occur if divers do not adhere to the maximum operating limits of their Nitrox mix?

Adhering to the maximum operating limits of a Nitrox mix is crucial for maintaining diver safety, primarily because of the potential risk of oxygen toxicity. Nitrox mixtures increase the percentage of oxygen in the breathing gas, which can lead to oxygen toxicity if the partial pressure of oxygen exceeds safe levels, particularly at deeper depths. When divers exceed these limits, they can experience various symptoms of toxicity, including visual disturbances, seizures, or loss of consciousness, all of which can lead to life-threatening situations underwater. This makes understanding and respecting the maximum operating limits essential for safe diving practices with enriched air.

While decreased visibility, increased air consumption, and longer recovery times may be associated with various diving conditions or practices, they are not directly related to the immediate and severe risks posed by exceeding Nitrox limits, making the risk of oxygen toxicity the most critical concern in this case.