<P> A beach is a landform alongside a body of water which consists of loose particles . The particles composing a beach are typically made from rock, such as sand, gravel, shingle, pebbles, or cobblestones . The particles can also be biological in origin, such as mollusc shells or coralline algae . </P> <P> Some beaches have man - made infrastructure, such as lifeguard posts, changing rooms, and showers . They may also have hospitality venues (such as resorts, camps, hotels, and restaurants) nearby . Wild beaches, also known as undeveloped or undiscovered beaches, are not developed in this manner . Wild beaches can be valued for their untouched beauty and preserved nature . </P>

Where does the material that forms beaches come from