Based on the provided reference, a possible interpretation of what you want to know about a beach is its definition and composition.
A beach is a landform situated alongside a body of water. Its defining characteristic is that it's made up of loose particles. According to the reference, these particles are typically rock-based materials such as:
- Sand
- Gravel
- Shingle
- Pebbles
However, a beach can also be formed from biological materials:
- Mollusc shells
- Coralline algae
Essentially, beaches are dynamic interfaces between land and water, constructed from various loose, granular materials.
