Tides play a crucial role in shaping coastal ecosystems by influencing factors such as nutrient availability, habitat creation, and species behavior. The ebb and flow of tides bring in nutrients from the ocean, which can support the growth of plants and phytoplankton, forming the base of the food web. Tidal fluctuations also create diverse habitats like tide pools, estuaries, and salt marshes, providing shelter and feeding grounds for a variety of marine organisms. Additionally, tides can affect the distribution and behavior of species, influencing their feeding patterns, reproduction, and overall ecosystem dynamics.