Young Curly Blonde Girl At The Coast Exposed To Sea Waves

While many scientific experts might agree on a common definition of the term "coast", the delineation of the extents of a coast differ according to jurisdiction, with many scientific and government authorities in various countries differing for economic and social policy reasons.
Formation
The main agents responsible for deposition and erosion along coastlines are waves, tides and currents. The formation of coasts is also heavily influenced by their lithology. The harder the material the less likely it is to erode or suffer the effects of erosion. Variants in the rock create different-shaped coastlines.