The term 'Narrow Land Projections into the Sea' can be summarized as spits, which are narrow strips of land that extend from the mainland into the sea. Spits are formed by the deposition of sediment by longshore drift or the movement of sediment along a coastline due to the action of waves and currents. They are often found at the mouths of rivers, where the river's current deposits sediment on either side of the river's mouth. Spits can also form in areas with strong currents, such as the Gulf of Mexico. Spits provide protection from storms and high waves, and they are important habitats for many species of birds and other wildlife.