Maybe I did not know enough when I posted here questioning the evolutionary successes of snails. NatureNews: Left turns saves snails from snakes explained that "some species of Satsuma snail have shells that coil to the left, which probably evolved because the snakes that prey on them have jaws specialized for feeding on the molluscs' right-coiling ancestors".
I have a feeling next time when i see a snail, i will instinctively observe the direction of the coil
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