Eagles play a crucial role in maintaining the ecological balance of aquatic ecosystems through their predation on fish and other aquatic organisms. By hunting and feeding on these species, eagles help control their populations, preventing overpopulation that could lead to imbalances in the ecosystem. This helps ensure that other species within the food chain are not overly impacted by the abundance of fish and aquatic organisms. Additionally, eagles also scavenge on dead and decaying fish, which helps to clean up the environment and prevent the spread of disease. In this way, eagles contribute to the overall health and balance of aquatic ecosystems.