Neutral buoyancy is a state of equilibrium in which an object is neither floating nor sinking. A diver achieves neutral buoyancy by adjusting their weight, usually through the addition or release of air from their buoyancy compensator device (BCD). This allows them to maintain a constant depth without having to constantly swim up or down.
Neutral buoyancy is important for divers because it allows them to stay at a specific depth without having to expend energy. It also helps to reduce the risk of decompression sickness, which can occur when a diver ascends too quickly. Neutral buoyancy is a skill that all divers should master to ensure their safety and enjoyment while diving.