beach builders' rubble coast coastline color colored colors colour coloured colours dumped growing growth layers levels low tide mangroves natural ocean outcrop pebbles plants pollution receding tide rock formations rocks rocky rough rubble sand sea seashore seaside shade shadows shapes shore shoreline Sizes stones stony sunlight sunshine tidal tides variety waste water waterline alive animal aquarium aquatic arms biology brown bumps coastal conservation coral creature echinoderms endoskeletons environment environmental fish five five-arms life marine nature outer-shell pitted pool rock rockpool save sea-creatures seastar star starfish surface textures tide tidepool tube-feet underwater wild wildlife astronomy aurora beautiful black blue cloud colourful creation deep electromagnetic eternity exploration futuristic galaxy Genesis god graphic heavens illustration in the beginning interstellar light milky way molecular nebula nebulae night outer space plasma render sci-fi science science fiction skies sky space space travel stars swirl twinkle universe white wonder worlds abstract background blended coloration contrast contrasting curved curves dark deep-water design details interconnected interlinked interwoven jellyfish lines liquid liquidy marine-life patterns perspectives shape shaped style surfaces symmetrical symmetry texture textured thick thin transparent under-water variations vibrant wallpaper artistic backdrop bright colorful connected contoured contours decorative distinctive edged edges ice-blue ice-flow ice-like ice-pack intermeshed marble marbled marbling surfacing boat-pens boats buildings distant harbor harbour Haze hazy Hong-Kong marina masts moored moorings motor-boats mountainous mountains navigation outdoor-sports outdoors pastime penned pens popular recreation sailing sails secure security ships sight-seeing sport success tethered tied-up transportation travel vessels views watercraft waves wealth yacht club yachts apocalypse armageddon atomic bomb bomb brimstone burning burst danger desktop dez pain doomsday energy event horizon explode explosion fantasy fear fire future Ground Zero hades hell hot implode infinity lava mushroom cloud nightmare powerful storm time travel trouble turmoil vector volcanic war xymonau boy commuters commuting father grab-handles grip gripping handholds handle hanging-strap held holding-on man movement moving passengers people railway son standing standing-passengers strap-hung-handles straps suspended-strap toddler train transit transport travelers traveling travellers travelling wait waiting window window-views accommodation action active activity adult boat boating canopy culture dangers enjoyment expensive fast handling houseboat leisure manoeuvrability mobility motion motor-boat outdoor outside power power-sport quick recreational ripples rippling river river-views riverbank riverside scenery skill speed speed-boat trees water-transportation waterways angles board circuit-board communication components computer connecting connections Dirt dirty disconnected dusty electrical electricity electronic equipment gadgetry inside internal linked links metal miniature no-longer-in-use numbered numbers numerals old outdated part parts plastic plastics printed-circuit small switches transistors unwanted useless