surface intervals

Surface intervals are the periods spent on the surface between scuba dives. They are important because they allow the body to off-gas excess nitrogen absorbed during dives, reducing the risk of decompression sickness. The length of the surface interval affects safety and dive planning; longer intervals generally decrease nitrogen levels, enabling divers to perform subsequent dives with lower risk. Proper management of surface intervals ensures a safer diving experience by helping the body eliminate nitrogen gradually between dives.