During a dive, if a diver feels disorientated, what should they do?

Feeling disoriented underwater can be a result of various factors, including changes in depth, buoyancy issues, or environmental conditions. Ascending slowly to a shallower depth is a prudent action in this scenario because generally, many disorientation issues can improve with increased light and reduced pressure. Ascending can help the diver regain perspective and comfort, as well as ease the effects of nitrogen narcosis or other physiological responses that might cause disorientation.

Additionally, an ascent allows for safer navigation back to familiar surroundings or to the surface where they can assess their situation further. It is critical, however, that this ascent is done slowly to prevent any potential problems related to decompression, as rapid ascents can lead to serious injuries like decompression sickness.

While signaling a buddy for help and taking a moment to breathe deeply are valid responses to issues faced by a diver, addressing disorientation directly by ascending to a safer depth is often the most effective first step. Continuing to dive could exacerbate the feeling of disorientation and lead to a more dangerous situation.