How does water move in aquatic environments?

Water moves in aquatic environments through various processes, primarily driven by gravity, wind, and temperature differences. In rivers and streams, water flows in a continuous current, while in oceans, currents are influenced by factors such as the Earth's rotation and salinity gradients. Additionally, water circulates vertically due to thermal stratification, where warmer, lighter water sits atop cooler, denser water. This movement is essential for nutrient distribution, gas exchange, and the overall health of aquatic ecosystems.