What is the sand or stoney bit of land next to sea?

The sand or stoney bit of land next to the sea is called a beach. A beach is a narrow, gently sloping strip of land that consists of sand, shingle, pebbles, or other unconsolidated material. It is usually found along the edge of a body of water, such as an ocean, lake, or river. Beaches are formed when waves and tides erode and deposit sand and other sediments on the shore. They can be found in a variety of environments, from tropical to polar regions, and can range in size from a few metres to several kilometres in length. Beaches are popular recreational areas for swimming, sunbathing, boating, and other activities.