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

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A bar is a ridge of sand or single that joins two headlands either side of a bay.

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Onshore winds (winds blowing inland from the sea) cause the formation of sand dunes at the back of a beach. Sand is deposited by the wind around an object such as a rock, forming embryo dunes. Over time, vegetation such as marram grass stabilises the sand dunes forming foredunes. As the vegetation around the foredunes decomposes nutrients are released and soil begins to form. A wider range of plants are then able to colonise the dunes.

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The beach is the area between the lowest spring tide level and the point reached by the storm waves in the highest tides.

Find out more about landforms of coastal deposition.

Find out more about landforms of coastal deposition.