Core Viewpoint - The traditional practice of "catching the tide" has evolved into a popular tourist activity, raising concerns about ecological protection and sustainable practices in coastal areas [1][3][5]. Group 1: Tourism Development - The beach at Tangjiawan has become a social media hotspot for "catching the tide," attracting over ten thousand visitors daily during peak seasons [3]. - Tourists, rather than local fishermen, are now engaging in this activity, using tools like buckets and shovels to collect marine life for entertainment [3][5]. - The rise of this tourism trend has stimulated local service industries, contributing to economic growth in coastal regions [3][5]. Group 2: Ecological Concerns - Increased tourist activity has led to significant ecological challenges, particularly affecting the local seagrass beds, which are crucial for marine biodiversity [5][9]. - The seagrass species, Halophila beccarii, is classified as vulnerable and has seen a drastic reduction in coverage, with only 10% of its original area remaining since 2022 [5][11]. - Destructive practices by tourists, such as digging and using salt, have been identified as harmful to the marine ecosystem [5][9]. Group 3: Conservation Efforts - Local experts have proposed the establishment of protected areas to safeguard the seagrass beds and have submitted reports to relevant authorities [5][7]. - Educational initiatives are being implemented, including signage and volunteer programs, to inform tourists about sustainable practices and the importance of marine conservation [7][12]. - The government is actively promoting guidelines for responsible "catching the tide" practices, emphasizing non-invasive methods [7][9]. Group 4: Regulatory Challenges - Some commercial operators are engaging in illegal practices, such as "deep catching," which involves trapping marine life in nets, posing a severe threat to biodiversity [9][11]. - The overlap of tourist activities with protected marine areas raises significant concerns about the impact on endangered species, such as the Chinese horseshoe crab [11][12]. - The need for effective management and regulation of the burgeoning "catching the tide" tourism market is critical to balance economic benefits with ecological preservation [13][15].

Core Viewpoint - The traditional practice of "catching the sea" has evolved into a popular tourist activity, leading to significant ecological challenges as tourists engage in destructive methods that threaten marine biodiversity [1][3][12]. Group 1: Tourism Development - The beach at Tangjiawan has become a social media hotspot, attracting over ten thousand visitors daily during the summer, transforming the traditional fishing activity into a leisure pursuit [3][8]. - The rise of "catching the sea" as a new cultural tourism model has stimulated local service industries, but it has also led to increased pressure on marine ecosystems [3][19]. Group 2: Ecological Impact - The seagrass bed at Tangjiawan, home to the endangered Halophila beccarii, has seen a drastic reduction in area, with only 10% of its original size remaining since the influx of tourists began in 2020 [8][7]. - Destructive practices by uninformed tourists, such as digging and using salt, have resulted in the removal of vital seagrass, which plays a crucial role in marine biodiversity and food chains [5][8]. Group 3: Conservation Efforts - Local authorities and researchers are advocating for the establishment of protected areas and have begun implementing educational campaigns to inform tourists about sustainable practices [10][19]. - Volunteer teams have been organized to guide tourists and set up warning signs to prevent harmful activities in sensitive ecological zones [10][18]. Group 4: Regulatory Challenges - Some commercial operators are engaging in illegal practices, such as "deep catching," which involves trapping marine life in nets, posing a severe threat to local ecosystems and endangered species like the Chinese horseshoe crab [12][14]. - The unregulated nature of tourism in areas like Beihai and Beigang Island has raised concerns about the sustainability of marine resources and the health of local ecosystems [14][16]. Group 5: Future Directions - Experts suggest that a balanced approach to "catching the sea" should be adopted, focusing on ecological sustainability while allowing for tourism development [19][21]. - The concept of "ecological catching" emphasizes the need for proper resource assessment and management to ensure that tourism does not compromise marine biodiversity [21].