Climate change has far-reaching impacts on the environment, human societies, and the stability of vital systems that sustain life on Earth. These interlinkages create a complex web of challenges that require a holistic understanding of the relationship between climate change, social systems, and vital system security, particularly in the context of aquatic ecosystems, which are highly sensitive to environmental shifts. The primary way climate change affects aquatic ecosystems is through temperature shifts, altered precipitation patterns, and rising sea levels. The warming of oceans and freshwater bodies disrupts marine and freshwater species, their reproductive cycles, and the overall balance of the ecosystems. Fish migration patterns, coral reef health, and biodiversity are deeply impacted by changes in water temperature. Rising sea levels, driven by the melting of polar ice caps, lead to saltwater intrusion into freshwater systems, disturbing drinking water supplies and agriculture. Additionally, extreme weather events, such as more intense storms and flooding, can destroy aquatic habitats, leading to the loss of vital ecosystem services like water purification, flood regulation, and carbon sequestration. Aquatic ecosystems are at the heart of social systems,