When you are diving, you can feel free and forget everything else. However, for the surface team, the uncertainty of the diver's situation is making the experience tense, because in this extreme sport there is no room for errors. Team Seasu introduces a solution that enables the surface team to track the location and depth of a diver wirelessly and in real time. Using our app and hydroacoustic communication method, we also establish a way to exchange messages between the diver and the surface team. Come visit our underwater world and fear no more: Seasu sees you!