<p>Underwater systems play a pivotal role in subaquatic exploration and navigation. This paper presents an in-depth analysis of the advancements and prospects of underwater systems from several technological viewpoints, aiming to shift the existing paradigms in underwater technology. The paper begins by discussing the challenges posed by traditional underwater technologies, focusing on sensing and navigation techniques, as well as underwater communication methods. Subsequently, it explores the potential of emerging technologies in transforming the field of underwater systems. These include transformative sensing technologies such as underwater light detection and ranging (LiDAR), differential Global Positioning System (GPS), and synthetic aperture sonar, as well as the integration of perception, quantum technology, and artificial intelligence for enhanced data processing, object detection, and multi-sensor fusion. The paper also highlights the importance of advanced communication networks in enabling efficient and reliable underwater communication. Furthermore, critical considerations such as technology management, acceptance range, and security issues are addressed to ensure the successful adaptation of these new technologies. This paper serves as a comprehensive guide for researchers and practitioners towards the next generation of underwater systems, highlighting the road to paradigm-shifting the subaquatic frontier through the integration of these advancements.</p>