Core Viewpoint - Hainan province is innovating its marine space management by implementing a three-dimensional layered usage rights system, allowing multiple projects to coexist in the same marine area, thus enhancing resource utilization and opening new avenues for marine economic development [3][5][6]. Group 1: Policy Innovation - Hainan has introduced a layered marine usage rights system, dividing marine space into four layers: water surface, water body, seabed, and subsoil, which can be allocated separately [5][6]. - The implementation of this system aims to resolve conflicts over marine space and improve resource utilization efficiency [6][8]. - The new regulations have gained national attention and are being promoted as a model for marine space management [5][6]. Group 2: Project Implementation - The Hainan underwater data center project is the first of its kind to utilize the layered marine usage rights, occupying only 14.46 hectares and demonstrating the potential of multi-layered marine development [4][8]. - Other projects, such as the bridge construction in Sanya and the aquaculture project in Lingshui, have also successfully utilized the layered approach, marking a significant shift in marine space management [8][9]. Group 3: Market Mechanism Enhancement - Hainan has developed a "land supermarket" platform where marine usage rights are made available for enterprises, increasing transparency and convenience in the application process [11][12]. - The "clean sea" allocation model allows for streamlined approval processes for aquaculture projects, significantly reducing the time and effort required for obtaining marine usage rights [11][12]. - As of now, 155 marine plots covering approximately 280,000 acres have been listed on the platform, with 18 plots totaling 38,600 acres already allocated [12].

Core Insights - Shandong Province has over 3,500 kilometers of coastline and nearly 160,000 square kilometers of sea area, contributing to a comprehensive marine industry with rich data resources, accounting for 25% of the country's high-quality marine data [1] Data Aggregation - Shandong has established a marine data storage cluster with a scale of 170PB, creating an independent marine data observation system that aggregates 292 types of data resources, including over 50PB of high-quality marine data [1] Data Circulation - The province initiated the establishment of a national marine trusted data space development alliance and built the first specialized marine big data trading service platform in the country, which has aggregated over 12 billion global marine data resources and achieved a transaction volume exceeding 35 million yuan by June 2025 [1][2] Data Application - A "1+N+X" marine artificial intelligence model system has been constructed, providing digital solutions across various sectors such as marine fisheries, ecological governance, disaster reduction, wind power development, and port shipping, effectively reducing offshore wind operation and maintenance costs by 15% [2] Future Plans - Shandong aims to enhance marine data circulation and utilization, establishing a marine data market system centered in Qingdao, with plans to create three centers: a national marine data resource aggregation center, a national marine data circulation trading center, and a national marine data application demonstration center [2]