A spit is a narrow landform that extends into a body of water, often formed by the accumulation of sand and sediment. It typically connects to the mainland at one end and is surrounded by water on the other sides. Spits can create sheltered areas, which may develop into lagoons or estuaries, providing unique habitats for various wildlife. Spits are commonly found along coastlines and are shaped by natural processes such as waves, currents, and erosion. They can vary in size and length, and some famous examples include the Chesapeake Bay spit in the United States and the Spit of Ashmore in Australia.