Shoreline phenomenon is a term used to describe the natural changes that occur along the shoreline due to the rise and fall of the TIDE. Tides are caused by the gravitational pull of the moon and sun on the Earth's oceans, resulting in a regular pattern of rising and falling sea levels. The effects of tides can be seen in coastal areas, where the shoreline is constantly changing due to the ebb and flow of the water. Tides are an important part of the marine ecosystem, as they bring in nutrients and oxygen to the shoreline, which helps to support the local wildlife.