What is a sea arch?

A sea arch is a natural rock formation that is created by the erosion of waves over time. They are typically found along coastlines, where the constant battering of the sea against the rock causes the softer, more easily eroded rock to wear away, leaving behind a bridge-like structure.

Sea arches can vary in size and shape, with some being small and narrow, while others can be large and expansive. They are often formed in areas where the coastline is made up of harder, more resistant rock layers surrounded by softer, more easily eroded rock.

Sea arches are a popular tourist attraction and can be found in many coastal regions around the world. They are not permanent structures, however, as the constant erosion from waves and weather conditions can cause them to collapse over time.