A recent study published in the journal Advanced Science by a collaborative research team led by The Hong Kong University of Science and Technology (HKUST) reveals that coral reefs in the South China Sea possess significant carbon storage capabilities, comparable to those found in traditional blue carbon ecosystems like mangroves and seagrasses. The research, spearheaded by Prof. Qian Peiyuan and his colleagues, employed innovative methods including stereo-video surveys and statistical modeling to assess carbon reservoirs within these reefs. The findings indicate that sediments serve as the primary carbon pool, while coral and fish also contribute to overall carbon storage. The degradation of coral reefs could diminish their carbon storage capacity, potentially releasing stored carbon back into the ocean and atmosphere. Additionally, the study highlights the role of reef fish in the carbon cycle, as their activities influence carbon transport to sediments. Prof. Qian emphasizes the necessity of conserving biodiversity to preserve the carbon sequestration functions of coral reefs amid global environmental changes.