Core Insights - The article discusses the endangered status of Tridacna gigas, a giant clam species, and the efforts by scientists to protect and restore its population through artificial breeding and habitat restoration [4][5][6]. Group 1: Unique Characteristics of Tridacna gigas - Tridacna gigas can grow up to one or two meters and has a unique symbiotic relationship with zooxanthellae, allowing it to thrive on sunlight and live over a hundred years [2][3]. - It plays a crucial role in the marine ecosystem by filtering thousands of liters of seawater daily, thus maintaining the clarity of coral reefs [3]. Group 2: Ecological Importance - The shell of Tridacna gigas provides habitat for various marine species, acting as a "marine apartment" for small crabs, shrimp, and fish [3]. - Its calcium carbonate shell contributes to reef formation and protects coral reefs and coastlines from wave impacts [3]. Group 3: Threats to Survival - Tridacna gigas faces multiple threats, including illegal trade, climate change, and habitat destruction due to human activities such as land reclamation and coral reef mining [4][5]. - A study indicated that the population of Tridacna gigas has decreased by over 80% in the past century, leading to its classification as a critically endangered species [5]. Group 4: Conservation Efforts - Chinese scientists are undertaking artificial breeding of Tridacna gigas to rebuild its population, utilizing controlled environments to stimulate breeding [6][8]. - The survival rate of released juvenile Tridacna gigas has significantly improved, with successful integration into natural habitats observed in demonstration areas [8].

Core Insights - The second training workshop on marine endangered species habitat modeling was held in Surat Thani, Thailand, from August 25 to 28, 2025, aimed at enhancing technical skills in habitat distribution research and conservation of marine endangered species [5] Group 1: Event Overview - The workshop was co-hosted by the First Institute of Oceanography under the Ministry of Natural Resources and the Department of Marine and Coastal Resources of Thailand, focusing on deepening cooperation in marine biodiversity conservation between China and Thailand [5] - The training included a core case study on the endangered species Dugong, covering concepts of species distribution models, data acquisition, preprocessing methods, and habitat model construction and validation [5] Group 2: Training Outcomes - Participants received hands-on guidance to complete the entire process of species distribution modeling, ensuring effective technical teaching [5] - The successful execution of the workshop enabled Thai participants to master habitat modeling techniques for marine endangered species, laying a foundation for future joint research, data sharing, and conservation actions between the two countries [5] Group 3: Future Collaboration - China and Thailand will focus on endangered species such as the Bryde's whale, Chinese white dolphin, Dugong, and sea turtles for in-depth research [5] - Collaborative efforts will include environmental DNA monitoring, species spatial distribution simulation, and migration corridor identification, supporting the spatial planning of marine protected areas in Thailand and contributing to regional marine biodiversity conservation [5]

Core Viewpoint - The article highlights the importance of horseshoe crab conservation, emphasizing ongoing research and monitoring efforts in the Beibu Gulf to protect this ancient marine species, which is crucial for marine biodiversity [4][5]. Group 1: Research and Monitoring Efforts - The Fourth Institute of Oceanography has been conducting surveys of horseshoe crab resources in the Beibu Gulf, providing essential scientific support for the conservation of this valuable species [4]. - A long-term monitoring network has been established in key habitats such as Shatian and Zhulin, allowing researchers to accurately track population dynamics, distribution patterns, and habitat changes [4]. - This year's survey has successfully completed field monitoring of three important horseshoe crab habitats, focusing on both population and environmental quality assessments [4]. Group 2: Data Collection and Analysis - The research team collected sediment and water samples from habitats to analyze environmental factors affecting horseshoe crab survival and reproduction, which will inform habitat protection and restoration efforts [4]. - In the previous year's monitoring, a notable density of horseshoe crabs was recorded in the Shatian area, reaching 46.88 individuals per 100 square meters, indicating a relatively healthy habitat and the potential success of long-term conservation efforts [5]. Group 3: Regional and Global Collaboration - The Fourth Institute of Oceanography joined the Asia-Pacific Horseshoe Crab Observation Network in 2021, promoting standardized monitoring methods and international sharing of conservation experiences and research results [5].