Core Viewpoint - The article discusses the development of the FlowSight sensor, inspired by the lateral line system of fish, which enables underwater robots to perceive water flow accurately for navigation and environmental monitoring tasks [1][3]. Group 1: FlowSight Sensor Development - The FlowSight sensor is a biomimetic lateral line sensor that utilizes flexible silicone whiskers to sense water flow [3]. - It captures deformation information of the whiskers using a built-in high-definition camera, which is processed through a deep learning model to determine water flow speed and direction [3]. - The sensor achieves a relative error of 3.05% in measuring water flow speed and 0.98% in measuring water flow direction [3]. Group 2: Integration with Underwater Robots - The FlowSight sensor has been integrated into a biomimetic underwater robot named RoboDact, enabling it to perform closed-loop motion control based on water flow perception [4]. - RoboDact can navigate upstream and adjust its posture dynamically, providing new solutions for underwater exploration and ecological monitoring [4][5]. - The integration allows RoboDact to adapt its speed and direction according to various complex underwater environments [5]. Group 3: Research and Funding - The research work on FlowSight was published in the IEEE Transactions on Robotics and received funding from several national projects, including the National Key R&D Program and the National Natural Science Foundation [1][6].