The article explores how sand moves around structures like groynes and headlands at the beach. By using a computer model, the researchers found that factors like wave size and direction affect how sand is transported. They also discovered that including wave groups in the model improved the accuracy of predicting shoreline changes. Rip currents near headlands play a big role in moving sand outside the surf zone. A study at a beach in Malaysia showed that the shape of the shoreline changes depending on the season's wave patterns. Overall, the study helps us better understand how sand moves along the coast and can help with managing coastal areas.