Which of these is not how a land-dwelling snail might differ from a snail that lives in water? Which of these is not how a land-dwelling snail might differ from a snail that lives in water? Snails on land would have a muscular foot using contractions for movement. Snails on land would likely have gills or lungs inside the body or otherwise be protected from drying out. Snails on land would likely have thinner shells that are less heavy. Snails on land would likely have desiccation-resistant eggs.