Gymnosome pteropod (Hydromyles globulosa), a shell-less, planktonic mollusk sometimes called the sea butterfly, Bali, Indonesia

horizontal animal color colour glow close up detail yellow warm night landmark transparent underwater swimming deep nighttime landmarks details tourism fish fauna glowing tentacle invertebrate bali indonesia jellyfish gelatinous mollusk mollusc cutout cut out tropical climate black background copy space cutouts full length cut outs tourist attractions attractions destinations mollusks animals marine life black blue pacific ocean pacific oceans nobody attraction destination travel ocean colourful one animal color image molluscs mollusca invertebrates water sea life close up tourist attraction travel destination travel destinations animals in the wild place of interest zoology cnidaria pelagic colour image no one no people zoological temperate opisthobranch gastropod plankton cnidarian gastropods underwater photography places of interest warm water deep sea cnidarians planktonic zooplankton closeup gymnosome pteropod pteropod sea butterfly hydromyles globulosa clione clionidae clionoidea diacria globulosa gymnosome holoplanktonic hydromyles limacina medusoid polypoids pteropoda shell less thecosome zooids pteropods