A wave is a disturbance on the surface of the sea or ocean, in the form of a moving ridge or swell.

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Salt weathering is when salt spray from the sea gets into a crack in a rock. It may evaporate and crystallise, putting pressure on the surrounding rock and weakening the structure.

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Mass Movement is the downhill movement of cliff material under the influence of gravity.

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An offshore bar is a raised area of seabed that is found offshore.

Find out more about landforms of coastal deposition.

A bar is created when there is a gap in the coastland with water in it. This could be a bay or a natural hollow in the coastland. The process of longshore drift occurs and this carries material across the front of the bay. Material is pushed up onto beaches at a 45-degree angle when the swash brings it onto the coastline. The backwash takes it back out towards the sea at a right angle to the coast. Through this process, the material is constantly moved along the coastline. The deposited material eventually joins up with the other side of the bay and a strip of deposited material blocks off the water in the bay. The area behind the newly formed bar is known as a lagoon.

Find out more about landforms of coastal deposition.