Navigational Utility Underwater System, or Na.util.us, is a conceptual augmented interface displayed on a scuba diver’s mask. The system connects to the divers gear to provide data essentials with equipment and surroundings. It further enhances the dive by preemptively recognizing key signals between divers, helping in the identification of marine life, and providing relevant geo-location information. By nature, scuba diving is a dangerous sport. The na.util.us helps in minimizing the risk as well as providing a more interactive and enjoyable experience.