Core Insights - The "Extreme Frog" Autonomous Underwater Vehicle (AUV) developed by Chinese researchers successfully completed sub-ice tasks in the Arctic Ocean, providing critical technical support for studying the ice-bottom environment [1] Group 1: Technology and Capabilities - The "Extreme Frog" AUV features two modes of movement: underwater cruising and crawling, allowing it to switch flexibly in complex environments [1] - It is equipped with various sensors and imaging devices, including underwater stereo cameras and multi-beam sonar [1] - The AUV demonstrated stable performance during two dives in both low and high-density ice areas, validating its control capabilities and enabling comprehensive surveys of the underwater hydrological environment and ice morphology [1] Group 2: Research and Application - The leader of the Arctic scientific expedition team, Professor Chen Zhuoqi, highlighted the stable performance of the "Extreme Frog" AUV in polar environments, showcasing the application potential and scientific value of domestically developed submersibles in extreme conditions [1] - During the expedition, four team members conducted underwater operations in the Arctic's high-latitude ice areas, utilizing the AUV for joint detection of ice-bottom topography and underwater environments [1] - Compared to traditional unmanned submersibles, the "Extreme Frog" AUV offers significant advantages such as lightweight design, high maneuverability, and multi-modal movement, making it suitable for diverse observational needs [1]