2. Coastal Landforms Erosional Features

3. Cliff and Wave-cut Platform Active wave erosion between the high water mark and low water mark Notch

4. Cliff and Wave-cut platform Basal undercutting; notch enlarge Rock above notch collapse Cliff retreats

5. Cliff Cliff retreats Wave-cut platform enlarges Cliff and Wave-cut platform Wave- built terrace

6. Sea cave, blow hole and geo Active erosion Line of weakness

7. Sea cave, blow hole and geo Sea cave at the base of the cliff Sea cave Cliff

8. Sea cave, blow hole and geo Lines of weakness Sea cave enlarges Hydraulic action continues

9. Sea cave, blow hole and geo Blow hole Sea cave Blow hole Sea cave A tunnel is formed

10. Sea cave, blow hole and geo Roof of cave collapses Geo (a steep-sided narrow inlet)

11. Sea cave, sea arch and sea stack Line of weakness Caves

12. Sea cave, sea arch and sea stack Arch A tunnel formed

13. Sea cave, sea arch and sea stack Arch collapses Sea stack Arch collapses