👉 The beach fluid refers to the unique, viscous substance that forms when seawater meets sand on a beach, creating a gel-like consistency. This phenomenon occurs due to the interaction between water molecules and sand grains, where water molecules penetrate the spaces between sand particles, forming hydrogen bonds. As a result, the sand grains adhere to each other, creating a cohesive yet malleable material that can flow and deform under pressure. This beach fluid is crucial for various coastal processes, such as the transport of sand along the shoreline and the formation of dunes, and it plays a significant role in shaping coastal landscapes.
