Ключевые слова: adriatic, blue, brown, cave, caves, clam, cost, costs, cycle, dips, gravel, grit, horizontal, italy, light, line, linearity, lines, marine, mollusc, overhanging, pick, polignano, puglia, quality, rocky, sand, scale, sea, search, shell, shellfish, shells, summer, sun, sunny, tourism, tourists, typical, water, wave, waves, white, world,