Ключевые слова: background, baltic, beach, coast, coasts, crust, crusts, dune, dunes, exoskeleton, gastropod, holiday, holidays, landscape, marine, mollusc, molluscs, nature, ocean, poland, postcard, recreation, relaxing, sand, sandy, scenery, sea, sealife, seashell, seashells, seaside, seastar, seastars, shell, shells, snail, star, stars, summer, sun, tropical, underwater, valve, water, waves, wavy, weathered, zen,