Satsuma snails with counterclockwise shells are less likely than clockwise-shelled snails to be eaten by snail-eater snakes. This advantage, suggested Japanese biologists, may explain why sinistral snails are so successful in spite of having their genitals on the wrong side.
Satsuma snails with counterclockwise shells are less likely than clockwise-shelled snails to be eaten by snail-eater snakes. This advantage, suggested Japanese biologists, may explain why sinistral snails are so successful in spite of having their genitals on the wrong side.