Title: Exploring the Cutting-Edge Technology of Proximity Sensors in Marine Applications In the vast and deep ocean, proximity sensors are becoming a crucial tool for marine research. These sensors use advanced detection technology to identify and measure the distance to surrounding objects or environments with precision. In marine applications, this means greater navigational safety, more effective resource management, and higher efficiency in underwater construction. Proximity sensors are primarily used in underwater drones and autonomous submarines. Mounted at the front of these devices, they can accurately detect obstacles in the water and on the seabed, preventing collisions that could damage equipment or endanger marine life. This is critical not only for protecting expensive underwater equipment but also for maintaining the health of the marine ecosystem. The application of proximity sensors extends beyond just avoiding obstacles. During marine scientific research, researchers utilize these sensors for precise underwater mapping. By measuring the distance to the seabed, researchers can create detailed three-dimensional maps of the seafloor topography. This information is invaluable for understanding geological structures, searching for mineral resources, and studying marine ecological systems. Proximity sensors can aid in environmental monitoring. For instance, when monitoring coral reefs, sensors can help scientists determine the precise location and condition of corals without direct contact, minimizing disturbance to this fragile ecosystem. Additionally, by long-term monitoring of marine litter distribution, researchers can better understand the impact of plastic pollution on marine environments and develop targeted cleaning strategies. As technology advances, future proximity sensors will become even smaller, more energy-efficient, and have broader applications. From deep-sea exploration to daily fishery management and from environmental monitoring to offshore oil and gas development, the role of proximity sensors will be indispensable. Through continuous technological innovation and application expansion, we have reason to believe that proximity sensors will play an increasingly important role in marine science and industry, helping us better protect and utilize ocean resources.