世界唯一！

Core Points - China has successfully conducted continuous manned deep-sea diving operations in the Arctic, making it the only country in the world to do so in areas with dense sea ice [1][7] - The mission utilized the "Exploration No. 3," China's first ice-capable manned submersible support vessel, and the "Fighter" manned submersible, completing a total of 43 dive missions [1][3] - The mission included collaboration with the "Jiaolong" manned submersible team, marking China's first deep dive in the Arctic ice zone and establishing a new model for underwater cooperative operations [3][7] Summary by Sections - Mission Overview - The Arctic manned deep-sea diving expedition began on July 22, with the team operating in the Arctic Ocean for 56 days [3] - The "Fighter" submersible completed 43 dive missions, while the "Jiaolong" team conducted its first dive in the Arctic ice zone [3][7] - Scientific Contributions - The expedition achieved the first manned deep-sea scientific research in the Gakkel Ridge under conditions of over 80% sea ice coverage, reaching a maximum depth of 5,277 meters [3][7] - A variety of valuable samples, including water, sediment, rock, and biological specimens, were collected, providing significant observational data for studying rapid climate changes in the Arctic [7]