What is the term for the area in which divers can operate without risking decompression sickness?

The term "no-decompression zone" refers to the depth range and duration of time in which divers can operate without needing to perform decompression stops during their ascent to the surface. When divers remain within this zone, they can surface directly without the risk of decompression sickness, which occurs when nitrogen bubbles form in the body due to rapid changes in pressure.

Understanding the no-decompression zone is critical for dive planning and safety. It is based on dive tables or dive computers that indicate the maximum time a diver can spend at a given depth before the risk of needing to decompress arises. The zone gives divers a guide to safely enjoy their underwater experience while minimizing health risks associated with nitrogen absorption during dives. This concept is fundamental in dive training and is emphasized to ensure that divers make informed decisions about their dive profiles.