n.
Semicircular or nearly circular concavity, similar to a gulf but usually smaller.
Bays may range from a few hundred yards to several hundred miles from side to side. They are usually located where easily eroded rocks, such as clays and sandstones, are bounded by harder, more erosion-resistant formations of igneous rocks, such as granite, or hard calcareous rocks, such as massive limestones. Some bays form excellent harbours.