backdrop background beach coast coastal coastline colors colours conservation conserve conserving contrast contrasting cultivation dune-flora dunes environment environmental flora foliage grass grasses green greenery growing growth leafy leaves levels light natural nature ocean ocean-edge ocean-waterline plants salt-resistant sand sand-dunes scrub tides vegetation water waterline appearance cool cooling dark darkening distance edge edged edges flowers foreground gray grey groundcover hardy Indian-ocean seaside skies sky texture textures variety wallpaper water’s-edge waves winter wintry action active activity adult anchorage anchored Australia boat boats buoys care city city skyline cityscape culture dangers enjoy fast luxury manoeuvrability mobility motor boat motoring outdoor outdoors outside pastime Perth popular power quick recreation river riverside safety sailing security skill speed sport summer transport transportation travel water sports waterways wealth path track abstract blue changing choppy color colour cruise-liner cruise-ship currents deep deep-blue distant ebb-and-flow expanse foam foaming froth motion movement powerful reflections ripples rippling salt-water sunlight surf surface troughs vast vibrancy vibrant view wake wash white advice alert appropriate-behavior appropriate-behaviour be-careful beware careful caution cliff cliffside communicate communication concern danger dangerous deterioration fading-sign fall falling information informing lookout observant restricted restriction restrictions risk risks risky shadows shapes shrubs sign signs trees warning warning-sign watch watch-out access angles assistance cables crew decks distinctive double-duty emergencies emergency equipped help huge-ocean-going-vessel journey lifeboat lifeboat-tender limited-access limited-entry lowered lowering maintained maintenance passenger-shuttle prepared ready red released releasing rescue ship’s-tender survival tender vessel visibility