Core Viewpoint - The successful completion of the scientific research mission of the China Ocean 90 voyage A segment highlights China's commitment to deep-sea resource exploration and marine environmental research, providing essential technical support and data assurance for international seabed management contracts [1] Group 1: Mission Overview - The voyage lasted 158 days and was guided by the China Ocean Affairs Administration, organized by the Second Institute of Oceanography, Ministry of Natural Resources [1] - The mission included systematic investigations in key areas such as deep-sea resource exploration, marine environmental research, and advanced equipment applications [1] Group 2: Research and Data Collection - The research team conducted comprehensive surveys of contract area resources and environments, obtaining a significant amount of baseline data and samples [1] - High-resolution topographic data updates and coverage of mining site areas were achieved during the mission [1] - Detailed near-bottom acoustic and optical surveys were implemented in multiple environmental reference areas, providing foundational data for regional resource understanding, benthic biodiversity research, and environmental impact monitoring [1] Group 3: International Collaboration - The mission included the first joint marine scientific investigation between China and the Cook Islands, conducting various comprehensive survey operations within the Cook Islands' exclusive economic zone [1] - Initial understanding of the environmental and resource distribution characteristics in the survey area was established [1] - A joint voyage open day event was held to enhance communication and cooperation in deep-sea scientific research and seabed mineral resources between the two parties [1]