KATIE KNAPMAN: So more and more material will be taken from one side of the beach, right along, and that is how the spit will form. DR ZALASIEWICZ: It is how the spit forms. It’s an ongoing ...

These can cause erosion of the coast. Wind can also cause ... Deposition can form beaches like this one, and sand dunes, or bars and spits. It takes thousands and thousands of years for these ...