A dive computer is a device used by divers to monitor their underwater activities. It tracks important information such as depth, time, and decompression limits, helping divers stay safe while exploring underwater environments. By providing real-time data, dive computers reduce the risk of decompression sickness, commonly known as "the bends." These devices can be wrist-mounted or integrated into a diving mask or console. Many modern dive computers also feature additional functions, such as air consumption tracking and dive logging. They are essential tools for both recreational and professional divers, enhancing safety and enjoyment during dives in various locations, including coral reefs and shipwrecks.