Here's a breakdown:
* Wave erosion: The constant pounding of waves against the coastline gradually wears away at the rock.
* Headland: A headland is a piece of land that juts out into the sea.
* Sea cave: Over time, wave erosion can create caves in the headland.
* Sea arch: As the cave continues to erode, it may eventually form an arch.
* Sea stack: When the arch collapses, the remaining pillar of rock is called a sea stack.
Sea stacks are fascinating geological formations that showcase the power of nature. They are often found along rugged coastlines where wave action is strong.
