What technique can a diver use to regain control if experiencing buoyancy issues?

Adjusting the air volume in the buoyancy compensator is the most effective technique for a diver to regain control when experiencing buoyancy issues. A buoyancy compensator (BC) is designed to help divers achieve neutral buoyancy by allowing them to add or release air. When a diver is too buoyant, they can release some air from the BC, which will lower their buoyancy and allow them to descend. Conversely, if a diver is descending too rapidly or feels they are too deep, they can add air to the BC to become more buoyant and ascend gently.

This technique is crucial for maintaining control during a dive, as proper buoyancy management is essential for safety and preventing accidents. In contrast, swimming at a faster pace may lead to increased energy expenditure and could exacerbate buoyancy problems rather than solve them. Descending without equipment is not a safe practice, as it can lead to uncontrolled buoyancy changes and potential hazards. Calling for assistance from the surface might be necessary in emergencies, but it does not address the immediate issue of buoyancy control in the water. Therefore, adjusting the BC is the relevant and practical response for a diver facing buoyancy challenges.