What is the small remnant of a sea stack referred to as?

A small remnant of a sea stack is referred to as a stump. When a sea stack, which is a column of rock standing in the sea, is eroded over time by waves and weathering, it may lose its upper portion, leaving a smaller piece standing. This leftover feature is called a stump, and it is often a result of continuous coastal processes that shape the landscape. The use of the term "stump" emphasizes that it is a remnant of what was once a larger formation, highlighting the ongoing geological activity along coastlines.

Understanding the term "stump" is crucial in coastal geography as it illustrates how sea stacks evolve and the natural processes that continue to shape coastal environments.