Core Insights - The ecological environment of the Huangyan Island waters is reported to be continuously excellent, with seawater quality and marine sediment quality maintaining a first-class rating [1] - The coral reef ecosystem is healthy and stable, with a significant increase in coral species recorded compared to the previous year [1][2] Group 1: Environmental Quality - The report indicates that heavy metals and petroleum hydrocarbons in fish samples are below evaluation standard limits, and cyanide was not detected in seawater, sediment, or fish samples [1] - The average coverage of live coral is reported at 29.8%, with a high replenishment rate of coral juveniles [1] Group 2: Biodiversity - A total of 134 coral species from 39 genera were recorded, an increase of 25 species from the 2024 survey [1] - The survey documented 145 species of reef fish from 24 families, with an increase of 20 species compared to the previous year [1] - Three species of seagrass were found in the lagoon, including Salicornia europaea, Halophila ovalis, and Zostera marina [1] Group 3: Ecosystem Stability - The report emphasizes the importance of Huangyan Island's natural ecosystem for providing habitat and shelter for marine life in the South China Sea [2] - Despite the positive findings, the report warns of increasing thermal stress on coral reefs due to climate change, highlighting the potential risk of coral bleaching [2]

Core Points - The marine science outreach activities conducted by the Beihai Ocean Center aimed to educate students about coral reefs and marine ecology through engaging methods such as lectures, hands-on experiences, and demonstrations [1][2] - The activities included a focus on coral reef protection, where students learned about the ecological functions of coral reefs and the threats they face, enhancing their understanding of marine conservation [1] - The use of high-tech equipment like drones and pH meters was highlighted, showcasing their importance in marine observation and research, which sparked students' interest in marine technology [2][4] Group 1 - The Beihai Ocean Center organized marine-themed science outreach events at local schools, including interactive sessions on coral reefs and marine ecology [1] - Students participated in a quiz and hands-on activities, reinforcing their knowledge and enthusiasm for marine science [1] - The outreach included demonstrations of diving equipment and marine survey techniques, allowing students to experience marine research firsthand [1][4] Group 2 - The high-spectral drone attracted significant attention, with students inquiring about its capabilities and applications in marine surveying [2] - Students engaged in pH testing activities, learning about the chemical properties of seawater and its importance in marine environments [3][4] - The overall response from students and teachers was positive, indicating that the activities successfully broadened scientific perspectives and fostered a sense of responsibility towards marine conservation [4]