For an animal with one foot, it certainly gets around. Even across oceans.
Scientists have shown that the land snail Balea perversa has somehow managed to travel from Europe to the Azores, then right down the length of the Atlantic Ocean to a remote set of isles between South Africa and South America - a 9,000 kilometre trip that seems unlikely for an animal that doesn't even know how to swim. The snails also seem to have made the return trip back to Europe.