Core Viewpoint - The "Jiaolong" manned submersible successfully completed over 10 manned deep dives in the Arctic, marking China's first manned deep dive in Arctic ice areas, showcasing the enhancement of China's deep-sea entry and exploration capabilities [1][3]. Group 1 - The "Jiaolong" submersible has undergone domestic upgrades and has officially entered polar operations after sea trials in the South China Sea [3]. - The expedition, part of the China Ocean 92 voyage, was conducted from July 15 to September 8, 2025, with the support of the icebreaker "Snow Dragon 2" [3]. - The operation included manned dives, ROV investigations, and CTD water sampling in the Arctic sea area [3]. Group 2 - Valuable scientific insights were gained, including significant differences in benthic organism density, biodiversity, and individual size across tens to hundreds of kilometers, likely related to seabed topography and water depth [5]. - The discovery of suspected pockmarks, dissolution holes, and carbonate rocks suggests historical cold seep eruptions, providing key information for studying methane migration pathways in the Arctic region [5]. - The detailed investigations by the manned submersible enhanced understanding of the distribution patterns of Arctic deep-sea biodiversity and the adaptive mechanisms of ecosystems [5].

Group 1 - The core viewpoint of the news is that China's 15th Arctic scientific expedition, led by the icebreaker "Xuelong 2," has successfully enhanced the country's deep-sea exploration capabilities, marked by the successful manned dive of the "Jiaolong" submersible in the Arctic region [1][4]. - The expedition involved four vessels: "Xuelong 2," "Jidi," "Shenhai Yihao," and "Tansuo Sanhao," making it the largest Arctic scientific expedition conducted by China [2]. - Preliminary research during the Arctic expedition revealed significant differences in benthic organism density, biodiversity, and individual size across spatial ranges of tens to hundreds of kilometers, providing strong support for understanding the spatial distribution of polar deep-sea organisms and assessing the impact of climate change on deep-sea ecosystems [4].

Core Insights - The "Haiqin" ROV successfully completed its first deep-sea test, validating its system functions and performance indicators, marking the "Zhongshan University" ship as one of the few in China equipped with a 6000-meter deep-sea ROV [1][3] Group 1 - The "Haiqin" ROV achieved a maximum diving depth of 4140 meters during multiple test dives, confirming the stability and reliability of its technical indicators and system operations [3][5] - Prior to the sea trial, all components of the ROV underwent pressure testing at 6000 meters on land, with the sea trial primarily serving a verification purpose [3][7] - The ROV is designed for deep-sea exploration and is supported by Zhongshan University, with production commissioned to Shanghai Jiao Tong University, enabling precise observation and sample collection for various deep-sea scientific tasks [3][8] Group 2 - The "Zhongshan University" ship is currently the largest and most advanced modern oceanographic research vessel in China, having completed 23 scientific expeditions since its commissioning, with a focus on deep-sea exploration [10]

Core Viewpoint - The article discusses the development and significance of a new soft-bodied underwater robot that utilizes innovative electro-hydraulic actuation technology, enabling it to operate effectively in extreme deep-sea environments, overcoming the limitations of traditional rigid robots [4][10][22]. Group 1: Technology and Innovation - The soft-bodied robot measures 32 cm in length, has an 18 cm wingspan, and weighs only 670 grams, showcasing exceptional adaptability to deep-sea conditions [1][7]. - Traditional rigid robots struggle in the deep sea due to high pressure and complex environments, making soft-bodied robots a more suitable solution due to their flexible structure and minimal environmental interference [3][4]. - The research team led by Professor Li Guorui from Harbin Engineering University has pioneered the use of electro-hydraulic actuators (EHA) for deep-sea soft-bodied robots, which do not rely on external pumps, thus allowing for a more compact and flexible design [4][10]. Group 2: Design Features - The robot features a wave-shaped tail for propulsion, buoyancy modules for stability, and an integrated optical sensing module for height adjustment, enabling it to monitor its distance from the seabed continuously [7][9]. - It incorporates a micro deep-sea optical sensing system that allows real-time perception of its motion and environmental targets, enhancing its operational capabilities in extreme conditions [9][10]. Group 3: Performance and Testing - The research team successfully tested the robot in various depths, including a deployment at 3176 meters in the South China Sea, where it demonstrated reliable maneuverability and sensing capabilities under extreme pressure and complex flow conditions [17][21]. - The robot's innovative design allows it to perform complex trajectory movements and low-disturbance detection, marking a significant advancement in deep-sea exploration technology [22][24]. Group 4: Future Implications - The development of this soft-bodied robot represents a breakthrough in deep-sea exploration, providing a powerful tool for marine scientific research, resource exploration, and environmental monitoring [22][10]. - The integration of artificial intelligence and robotics is expected to drive significant advancements in ocean development, making the ocean economy a vital growth point for coastal regions [22].