Being able to recognize and identify the form is important in evaluating its capabilities of eroding. Bluffs are steep and are made of clay, sand, or soft rock. Bluffs are not stable because of their form. Waves hitting at the foot of the base can quickly erode a bluff. These areas trap sand and sediment which help fight agains erosion.
Beaches are gentle slopes that contain loose sediment, such as coarse gravel, cobbles, and sand.
Which are moved by the waves. One of the natural characteristics that helps protects beaches from coastal erosion are dunes. The two pictures above show an example of a dune. Dunes are made of sand and deposits carried by the wind. Dunes are important for gathering and keeping sand together.