Cliffs close cliffA vertical rock face. along the coastline do not erode at the same pace. A cliff is a steep rock face. When a stretch of coastline is formed from different types of rock, headlands ...

Bands of soft rock such as clay and sand are weaker and therefore they can be eroded quickly. This process forms bays. A bay is an inlet of the sea where the land curves inwards, usually with a beach.

Pingtan Island is located off the southeast coast of China. The erosion of the land by the action of the sea has formed various kinds of rock formations. Pingtan Island is known as the "museum of ...