Core Insights - The "Marine Geological Six" research vessel has successfully completed the second phase of its 15th voyage, with multiple scientific results officially released on December 10 [1] Group 1: Mission Overview - The second phase of the 15th voyage began on August 29 and lasted for 95 days, covering a total distance of 12,673 nautical miles [2] - The mission collected valuable data and samples, including deep-sea marine environment data, seawater samples, seabed sediments, polymetallic nodules, and deep-sea biological samples [2] Group 2: Technological Advancements - The mission marked the first use of domestically developed 6,000-meter deep-sea remotely operated vehicles and autonomous underwater robots in the Pacific deep-water area, achieving significant application results [5] - High-precision tests and operations were successfully conducted near the seabed using these advanced technologies [5] Group 3: Scientific Contributions - The collected data will serve as a fundamental basis for studying deep-sea geology, deep-sea environments, and deep-sea ecosystems [7] - The mission also achieved the first electromagnetic profile measurement of the Pacific abyss, obtaining high-quality electromagnetic observation data that will assist in future ocean drilling site selection [7] Group 4: Future Plans - The "Marine Geological Six" vessel is scheduled to return to the Pacific in the first half of 2026 for more in-depth basic geological and environmental geological scientific investigations [9]