angles beach colors colours concrete Jetty levels long jetty low tide ocean perspective perspectives posts pylons railings rock formations rocks rocky rough safety sand security shipping ships strength strong support support legs textures tidal tides water Asia caves coast coastline color colored colour coloured distance distant expanse foliage growing growth Hong-Kong-islands Hong-Kong-waters islands layers natural outcrop plants sea seashore shade shadows shapes shore shoreline Sizes stones stony sunlight sunshine variety vegetation waterline Hong Kong islands Hong Kong waters national marine park abstract background cool cooling covered exposed light movement moving open outdoors outside patterns reflection reflections ripples rippling river rivers-edge riverside sparkle sparkling surface surfaces texture vibrancy vibrant wallpaper water's-edge waterflow waterways wavelets waves appearance boards bollards dark darkened decking environment environmental gray grey hand-rails lined lines marine-bollards old pier railing shady textured view wall weathered wood wooden worn beck cascade cataract caught clean creek danger destruction driftwood ecology energy fall force forest interwoven landscape mountain nature peaces power powerful puzzle raft root Roots scenery stream struck torrent tree waterfall wet wild wilderness woven asphalt circle cover detail dirty down drain drainage flood floor grate green grid grunge grungy heavy hole industry iron lid maintenance manhole metal pavement pipe rain rust rusty sewage sewer shape sidewalk sink steel stone storm street urban waste