Spits and Bars

• How is a spit formed:

  1. Firstly, prevailing wind causes zigzag longshore dirft, which moves sediment down the coast.
  2. Secondly, a change in the coastline will cause a spit to grow out at sea.
  3. Thirdly, the end of the spit will start to curve backwards, due to it being exposed to wind and waves.
  4. Finally, a salt marsh is formed in sheltered waters.