How do shorelines straighten?

Shorelines straighten primarily due to the processes of erosion and sediment deposition. Waves, currents, and tides continuously reshape the coastline by eroding softer materials and transporting them to areas where they accumulate. Over time, this leads to the smoothing of irregularities and the formation of straighter segments. Additionally, human activities, such as construction and dredging, can also contribute to the alteration and straightening of shorelines.