If a diver forgets to equalize, what should they do?

When a diver forgets to equalize, the safest and most appropriate action is to ascend slowly to relieve pressure. As a diver descends, the increasing ambient pressure can cause discomfort and potential injury to the ears and sinuses if equalization techniques are not used. By ascending slowly, the pressure on the diver's body decreases gradually, allowing for the easing of discomfort without the risk of barotrauma.

This method is crucial because it provides the diver with a chance to perform equalization techniques during the ascent, such as pinching the nose and gently blowing, which helps to equalize the pressure in the ears. Ascending at a controlled pace is essential for safety, as rapid ascents can lead to various diving-related injuries.

The approach of diving deeper to relieve pressure is not advisable because it can exacerbate pressure-related issues. Quickly swimming to the surface poses severe risks, including decompression sickness. While asking for assistance from instructors may seem helpful, the immediate action of slow ascent is the key response the diver should prioritize in this scenario.