at-rest blue blue-body brown bug bugs color colored colors colour coloured colours contrast delicate dragonfly fine flight fragile insect intricate large-eyes nature patterned patterns resting transparency transparent transparent-wings unusual veins wall wings appearance concrete-platforms contrasting cool cooling dark display fountain fountains froth light platforms reflecting reflection reflections regularity Rhythm ripples rippling shade shadows shooting sparkling splash splashing spouting spray spraying squirting streaming turbulence turbulent water water-feature wet animal big-cat black breeding Camouflage camouflaged carnivore colorful colourful conservation critically-endangered felid hunter mammal panthera-tigris-sumatrae Perth-zoo reclining rehabilitation relaxed relaxing small smallest-tiger solitary striped sub-species Sumatran-tiger swimmer tiger white white-bearded wildlife zoo