Sandbar

A sandbar, or shoal is a landform which is in or partly in a body of water. Usually it is made of sand, silt, and/or small pebbles.

Sandbar on the Isles of Scilly, off the coast of Cornwall

A tidal sandbar connecting the islands of Waya and Wayasewa of the Yasawa Islands, Fiji

"Shoal" redirects here. For the grouping behaviour in fish, see Shoaling and schooling.

Description

Shoals are long and narrow ridges. They can develop where a stream, river, or ocean current deposits sediment and granular material.

Shoals look like a coastal landform in the sea. They are classified as a type of ocean bank, or as fluvial landforms in rivers, streams, and lakes.

They are usually made up of sand. They can also be made up of soil, silt, gravel, cobble, shingle, or even boulders.