is a deposition bar
landform found off coasts
. It develops in places where re-entrance occurs, such as at a cove's headlands
, by the process of longshore drift
and longshore currents. The drift occurs due to waves meeting the beach at an oblique angle, moving sediment down the beach in a zigzag pattern. This is complemented by longshore currents, which further transport sediment
through the water alongside the beach. These currents are caused by the same waves that cause the drift.