LITUS means "the beach" in Latin,
  it is also the name for international research project to investigate the influence of   industrial and recreational activity on the functioning of sandy littoral (shallow water   and beach)  In the context of LITUS project, the beach is the zone between lowest and highest water mark. Practically it starts from the foot of the dune to about 1m depth in the Baltic sea.

Almost the whole Polish coastline consists of sandy beaches, in Europe sandy beaches make some 30% of the coastline.