abstract background blue changing choppy color colors colour colours cruise-liner cruise-ship currents dark deep deep-blue distance distant ebb-and-flow expanse foam foaming froth Indian-ocean light motion movement ocean powerful reflections ripples rippling salt-water sunlight surf surface texture textures troughs vast vibrancy vibrant view wake wallpaper wash water waves white horizon animals Asian-elephant-subspecies big browsers close colored coloured communicating connected connecting downpour elephant-hide elephants elephas-maximus-indicus enclosure endangered Females grazers habitat-loss hair hairy heavy herbivore hide Indian-elelphants intelligent mammal megaherbivores rain raining Singapore skin strength strong style tough trunks tusks wet wrinkled wrinkles wrinkly zoo