Most of the environment of aquatic ecosystems is water which is the habitat of aquatic creatures and amphibians that live in two realms. These ecosystems consist of living biomes that depend on each other and their environment. Then, the aquatic ecosystem consists of two types, namely marine ecosystems (marine) and freshwater ecosystems (freshwater) and its constituent components consist of biotic (living) and abiotic (non-living) factors. Therefore, to maintain aquatic ecosystems, it is necessary to take sustainable actions taken by universities and local communities, such as not overfishing. In addition, universities and the government can also make policies and educational programs to minimize changes in aquatic ecosystems, such as action plans to reduce plastic waste and monitor the health of aquatic ecosystems.