What action should be taken if a diver exhibits signs of distress underwater?

Monitoring a diver who shows signs of distress is crucial for ensuring their safety and well-being. By signaling for assistance, you are enlisting the help of other members of the dive team who can provide additional support in resolving the situation. This collaborative approach allows for the assessment of the distressed diver's condition without escalating the situation further or putting others at risk.

Keeping a close watch on the diver allows you to gauge their physiological and emotional state, offering real-time feedback regarding their distress level while also providing reassurance. The emphasis here is on maintaining a calm environment, which can aid in preventing panic and further complications.

Immediate ascent to the surface without assessment might exacerbate the diver's condition, especially if the distress is related to factors such as inadequate air supply, panic, or physical injury. Deep breathing techniques, while beneficial in some scenarios, may not be practical since the diver may be subject to more immediate concerns that require assistance and evaluation.