aquamarine blue coastline distance distant holiday horizon island islands islet islets landscape Maddalena mediterranean natural nature peace peaceful relax relaxation relaxing ripple rock Sardinia sea seascape summer tranquil vacation view water wave boat dinghy fun launch leisure moored motorboat pleasure tourism tourists cruise cruiser tour sail yacht atlantic danger fjord hills lighthouse norway ocean sign sky tower warning achtung bend exclamation exclamation mark expletive interjection mark turn warn beacon red rocks mountains Natural landscape shore lane marker Sea lane waves bay channel tiny