A sand spit is a narrow landform made of sand that extends from the mainland into a body of water, such as an ocean, sea, or lake. It is formed by the accumulation of sand and sediment carried by waves and currents. Over time, this process creates a hook-like shape that can protect coastal areas from erosion and serve as a habitat for various wildlife. Sand spits can vary in size and length, and they often connect to the mainland at one end while the other end is submerged or partially submerged. They are important for coastal ecosystems, providing nesting sites for birds and acting as barriers that influence water circulation and sediment deposition in nearby areas.