air backdrop background blue sky change cirrus climate cloud clouds cover creation cumulus desktop expanse fill firmament fluffy forecast fresh meteorology nature overcast oxygen ozone layer skies sky spring summer texture wallpaper weather whispy white Australia bay boats business district CBD city city scapes city views expanse of water harbor harbour high rise masts Melbourne motor boats office buildings passengers Port Phillip Bay sailing ships sailors ships Victoria views water Williamstown atmosphere cirro-stratus cloud formation dez pain global warming ozone rain stratus xymonau above aerial angles appearance arial below buildings distance distant flat flight flying from-above Haze hazy height high landscape looking-down movement moving ocean panoramic-views scenery scenic shadows sunlight sunshine travel travelling trees vegetation beach coast coastline color colored colors colour coloured colours levels low tide people receded receding receding tide sand sandy sea seashore seaside shore shoreline Sizes strolling tidal tides waders wading waterline brown central Australia country side dry formations hills outback panoramic views plains rocks rural sightseeing speed speeding train train journey undulating water pipeline window cumulostratus gloomy rain clouds spring skies adults bathing board riding board surfing boards children fun kids leisure lifeguard lifeguards numerous open area outdoors outside public rescue safety safety flags sport sporting sunbathing surf swimming waves wide-open space