Littoral Drift (English)
Deriva litoral (Español)
Dérive littorale (Français)
Sand and coarser material moved in the breaker and swash zones by waves and longshore currents along the shoreline.
For an in-depth understanding of how beaches form and change, watch the 20-minute video The Beach - A River of Sand (1965) which was made by Doug Inman, a marine geologist at Scripps Institution of Oceanography.