Group 1 - The theme for the 2025 World Oceans Day and National Ocean Awareness Day is "Protecting Marine Ecosystems for Harmonious Coexistence between Humans and Nature" [1] - The Ministry of Natural Resources will implement marine ecological early warning monitoring in 2024, covering 14 coastal standard sections and 1621 monitoring stations [3] - Continuous efforts in marine ecological protection and restoration have led to the rehabilitation of approximately 400 kilometers of coastline [5] Group 2 - The overall marine ecological status in China is stable, with improvements in some local areas, and typical ecosystems are primarily in good and stable condition [7] - Significant efforts are being made to protect and restore mangroves and coral reefs, which are crucial for coastal protection [8][6] - The establishment of the Dongzhai Port National Nature Reserve in Hainan has seen the planting of 1950 acres of mangroves [10] Group 3 - The Fujian Zhangjiangkou Mangrove National Nature Reserve is home to the most diverse and well-growing mangrove community north of the Tropic of Cancer, covering an area of 4000 acres [12] - Hainan has established 14 mangrove protection areas, with 73% of mangroves under protection, and plans to add 2000 hectares of mangroves by 2025 [13] - The coral reef protection efforts in Fujian include a systematic ecological restoration project using "artificial breeding + transplantation" techniques [15] Group 4 - The population and habitat of rare marine species in China have shown significant recovery due to ongoing marine ecological protection and restoration efforts [18] - The Shandong Changdao area is a key habitat for the endangered spotted seal, with ongoing ecological restoration efforts to improve the environment [21][24] - The artificial breeding base for the Chinese horseshoe crab in Fujian has achieved a breakthrough of over 300,000 larvae, with plans to release 100,000 juvenile crabs [27][29] Group 5 - China has entered the forefront of marine energy development and utilization technology, with significant advancements in tidal energy and wave energy [30] - The Zhejiang Wenling Jiangxia Tidal Experimental Power Station is implementing an automated decision-making system to enhance operational efficiency [32][34] - The LHD tidal current energy generator, developed in Zhejiang, has achieved stable grid connection for over 8 years [36] Group 6 - Guangxi, as the only coastal province in western China, has seen its marine production value grow from 137.7 billion to 258.09 billion yuan from 2017 to 2024, averaging a 9.4% annual growth rate [42]