From Latin supra - above, above and litoralis - coastal.

Supralittoral - coastal strip, occasionally flooded with water, the zone of wave splashing and the highest tides. Population of the supralittoral is poor qualitatively and quantitatively. It is represented mainly by amphibionts (crabs, bocoplaves).

It is covered by surf water, during surge winds, strong storm winds, during the highest so-called sisigian tides. It is characterized by high humidity.

Both marine and terrestrial flora and fauna are represented in the supralittoral. Animal species are rather few here, but their numbers can be very high. The supralittoral is the richest in temperate latitudes, because in polar regions its development is hindered by ice cover, and in the tropics by excessive insolation.

Seawater run-off provides a habitat for insects and animals released with the algae. Wet substrate is home to marine worms, molluscs and crustaceans. Aquatic animals are represented by equal-legged crayfish and bocoplaves, some gastropods, in tropical latitudes - some crabs, land hermit crabs of the genus Coenobita, some fish, e.g. mudskippers, crayfish. Some sea turtles and pinnipeds, e.g. seals, walruses, sea elephants, are associated with the supralittoral.