I'm reminded a bit of O'ahu tree snails: https://en.wikipedia.org/wiki/Oʻahu_tree_snail https://en.wikipedia.org/wiki/Oʻahu_tree_snail They have brightly patt

I'm reminded a bit of O'ahu tree snails: https://en.wikipedia.org/wiki/Oʻahu_tree_snail https://en.wikipedia.org/wiki/Oʻahu_tree_snail They have brightly patterned shells, and each one is different. One hypothesis for why this is is that it deprives the birds that eat them of a consistent pattern to look for.