What shapes the coast?

The video explains the dynamic nature of coastlines, highlighting how they are constantly changing due to waves. It describes how waves, formed by wind, cause erosion by breaking down rocks and transporting sediment. This sediment can lead to the shrinking of some coastlines and the growth of others, as seen at Spurn Head in England. The video emphasizes the role of different rock types in the rate of erosion and the movement of sediment over long distances.

What new insight or understanding did you gain from this video?