Core Viewpoint - The article highlights the significance of the Qinzhou Sandun Highway, known as "the most beautiful sea highway in Guangxi," which serves as both a tourist attraction and a boundary for ecological protection, particularly for the Chinese white dolphin [2][3]. Group 1: Ecological and Industrial Balance - The Sandun Highway represents a unique coexistence of natural beauty and industrial development, marking a boundary for the protection of the Chinese white dolphin while allowing for industrial growth in the western sea area [3]. - The highway was established following a strategic decision to abandon a 3.8 billion yuan investment project to protect the dolphin population, leading to a sustainable development plan for the marine area [3]. Group 2: Infrastructure Development - The highway, originally built in 2009, is currently undergoing expansion from two lanes to four lanes, with future plans to extend to eight lanes to accommodate increasing traffic demands [4]. - The Sandun Port area has seen significant development, with over 4,000 acres of land reclaimed and the establishment of a 300,000-ton oil terminal, attracting major companies and projects worth billions [5]. Group 3: Tourism and Environmental Impact - The highway has become a popular tourist destination, with over 40,000 related posts on social media, showcasing its scenic views and ecological significance [2]. - The local dolphin population has increased from fewer than 100 individuals 20 years ago to over 300 today, indicating successful conservation efforts [3].