action aquatic Atlantis Australia background bay beach beaches beauty blue breaking choppy coast coastal coastline crash creation cycle daytime ecology environment extreme foam Hawaii lake liquid marine motion move movement nature ocean ocean spray outdoor pacific pounding power primal queensland recreation rhythmic ripples river rocks sand scenic sea seaside shore shorebreak splash sports spray spume summer Sunshine Coast surf surfing swells swim swimming tahiti tidal tide travel tropical tsunami turquoise wallpaper water waterscape wave waves weather wet white color colored colors colour coloured colours green greenery growing growth layers levels ocean-edge ocean-waterline plants rocky rough scrub seashore shade shadows shapes shoreline shrubbery shrubs Sizes stones stony sunlight sunshine surface surfaces surfacing textured textures tides trees varied variety alive animal aquarium arms biology brown bumps conservation coral creature echinoderms endoskeletons environmental fish five five-arms life outer-shell pitted pool rock rockpool save sea-creatures seastar star starfish tidepool tube-feet underwater wild wildlife adults children distance distant expanse families light low tide open area pebbles people relaxing strolling sunset waders wading walking aerial aerial roots dunes glistening glossy mangrove growth mangroves natural ocean edge ocean waterline receded receding receding tide root network Roots salt-resistant sand dunes security strength strong support waterline