Core Insights - The discovery of the endangered Dugong in the waters near Yongshu Reef marks the first recorded evidence of this species in the area in nearly 30 years, filling a significant gap in species distribution data [1][5] - The presence of the Dugong, along with other protected species like Hawksbill turtles and Green turtles, highlights the ecological significance of the Yongshu Reef ecosystem and the success of conservation efforts in the South China Sea [8] Group 1 - The monitoring of Dugong activity began in mid-July 2023, with sightings confirmed on multiple occasions, including close observations and photographic evidence [1][5] - The Dugong is classified as vulnerable by the IUCN and plays a crucial role in maintaining the health of seagrass ecosystems, which are vital for biodiversity [4] - The last confirmed sighting of a Dugong in mainland China was in 2008, and it was declared functionally extinct along the Chinese coast in 2022 [5] Group 2 - The discovery of the Dugong corresponds with sightings in Taiwan, providing important data for understanding the species' migration patterns in response to global changes and human activities [5] - The ongoing collaboration between the South China Sea Institute of Oceanology and local environmental departments has established a long-term monitoring system for reef safety and ecological research [8] - Future efforts will focus on enhancing monitoring and research of marine ecosystems in the South China Sea to support conservation initiatives [8]