abstract appearance background beach changing coast coastline color colors colour colours currents dips distance distant ebb-and-flow expanse Indian-ocean light movement ocean peaceful powerful pull ripples rippling salt-water sand scene seashore seaside shore sunlight sunshine surface texture textures tide vast vibrancy vibrant view views water wavelets waves western australia Australia bay blue coastal-landforms erosion escarpment faulting faults foliage geological geology granite granitic gray grey hard hill iron iron-oxide landscape natural nature outcrop rock rocks rough rugged rust rusty scarp-face sea seascape shoreline shrubbery shrubs slope steep-slope vegetation across the river activity bridge bushland dangers enjoyment ferry hilltop icon iconic Kings Park late afternoon manoeuvrability mobility Narrows Bridge outdoor outdoors outside park people Perth popular power river river ferry riverside safety security skill summer Swan River tourists transport transportation travel trees turn war memorial wash waterways alive animal aquarium aquatic arms biology brown bumps coastal conservation coral creature echinoderms endoskeletons environment environmental fish five five-arms life marine outer-shell pitted pool rockpool save sea-creatures seastar shapes star starfish tidepool tube-feet underwater wild wildlife clouds dark footprints froth frothing horizon seaweed sky tracks Western-Australia aqua clear deep near shallow shallows surfaces boat bouy foreground rips action Atlantis beaches beauty breaking choppy crash creation cycle daytime ecology extreme foam Hawaii lake liquid motion move ocean spray pacific pounding primal queensland recreation scenic shorebreak splash sports spray Sunshine Coast surf surfing swells swim swimming tahiti tidal tropical tsunami turquoise wallpaper waterscape wave weather wet white rhythmic spume church fishing