massive white boulder as a sea stack lying in water of adriatic sea with beautiful coastline of numana, italy on the background.

adriatic ancona background beach blue boulder breakwater breakwaters coast coastal coastline cutwater del eroded flow foreground formations frate group groyne horizon italy landmark landscape limestone many marche marina massive mediterranean nature numana pier rock rocky scenery scenic sea seascape seawalls shape shore spiaggia stack stone stones tourism travel water waves