Core Insights - The article highlights the advancements in China's aerospace and marine exploration capabilities, showcasing the successful flight of the J-20 stealth fighter and the collaborative underwater operations of the "Jiaolong" manned submersible and an unmanned submersible [1][5]. Aerospace Industry - The J-20, China's first fifth-generation stealth fighter, has high stealth, situational awareness, and maneuverability, significantly enhancing strike success rates and enabling integrated operations with other aerial platforms [1][5]. - The J-20's maiden flight occurred on January 11, 2011, marking a milestone in China's aviation history, reflecting two decades of development in the aerospace industry [3][5]. - The successful development of the J-20 positions China among a select group of nations capable of independently developing stealth fighter jets, representing a historic leap in its aviation capabilities [5]. Marine Exploration Industry - The 15th Arctic Ocean scientific expedition marked China's largest Arctic research mission to date, involving the "Xuelong 2," "Jidali," "Shenhai Yihao," and "Tansuo Sanhao" vessels [5][10]. - The "Jiaolong" manned submersible and an unmanned submersible conducted the world's first underwater collaborative operations in polar regions, enhancing data comparability and operational efficiency [6][8]. - The expedition collected a significant number of biological samples, totaling 183 items across 12 categories, and filled gaps in high-latitude oceanographic surveys [10][12]. - The research improved understanding of the formation mechanisms of "marine snow" in the Arctic, contributing to ecological studies related to sea ice retreat [14].

来源：央视新闻客户端 中国第15次北冰洋科学考察完成考察任务。除了"蛟龙"号在北极冰区的首次下潜，这次任务还有另一个 突破，就是完成了全球首次极区载人与无人潜水器的水下协同作业。 在第15次北冰洋科学考察过程中，深海一号科考船搭载的"蛟龙"号载人潜水器与无人遥控潜水器，在北 极海域开展全球首次极区水下协同作业。 "蛟龙"号北极首潜主驾驶 傅文韬：因为"蛟龙"号作为载人潜水器，在水下从来都是单点作业，我们这 次就拓展了它的作业能力。我们尝试了"蛟龙"号和无人遥控潜水器共同作业，这就要解决包括通信、定 位等多方面的问题，然后再考虑下一步联合作业的问题。 "蛟龙"号与无人潜水器于8月14日完成首次携手下潜，对水下精准定位和通信功能进行测试，对双潜水 器水下作业模式进行了验证。8月15日完成的第二个潜次，则开展了双潜器水下联合作业，使用无人潜 水器拍摄了"蛟龙"号在海底进行水下生物、沉积物取样的视频；"蛟龙"号向无人潜水器转交了岩石、作 业标记物等物品；双潜水器还互相拍摄了彼此深海视频影像。 国家深海基地管理中心深海工程技术中心副主任 李德威：通过载人潜水器与无人遥控潜水器ROV协同 作业，可以实现1+1 >2的效果 ...

Core Insights - The article highlights China's successful completion of its 15th Arctic scientific expedition, marking the largest scale of such an endeavor to date [1][19] - A significant achievement during this expedition was the first manned deep-sea dive in the Arctic ice zone using the "Jiaolong" submersible, indicating a new phase in China's deep-sea exploration capabilities [3][5][7] Group 1: Expedition Overview - The expedition involved four vessels: "Snow Dragon 2," "Polar," "Deep Sea One," and "Exploration Three," showcasing China's commitment to Arctic research [1][19] - The expedition reached a record latitude of 77.5° North, filling a gap in high-latitude oceanic research for China [21] Group 2: Technological Innovations - The "Jiaolong" submersible's successful dive represents a breakthrough in China's deep-sea exploration, transitioning from "full ocean depth" to "full ocean area" operations [7] - The expedition featured the world's first underwater collaborative operation between manned and unmanned submersibles in the Arctic region, enhancing operational capabilities [8][10] Group 3: Scientific Discoveries - The expedition collected a diverse range of biological samples, including 183 specimens across 12 categories, contributing valuable data to marine biology [21] - AI technology was utilized for real-time biological identification during the expedition, combined with environmental DNA analysis to enhance accuracy [14][16] - The study revealed significant variations in benthic organism density and biodiversity across different spatial scales in the Arctic [18] Group 4: Environmental Insights - The expedition improved understanding of the formation mechanisms of "marine snow," a phenomenon observed in deep-sea environments, which is crucial for studying the Arctic ecosystem's response to climate change [23]