Buzz
In various cultures, certain traditions are deeply rooted, such as believing that insulting a newborn brings good fortune, or accepting the existence of elves as part of everyday life. Along the East Coast, many beach enthusiasts claim that a simple tune can entice a snail to leave its shell.
The common periwinkle (Littorina littorea) is a modest snail with a striped, brownish shell. Originating from England, where it’s referred to as the “edible periwinkle,” some of these snails may have been introduced to America as a food source, while others likely arrived accidentally on ships. Today, the periwinkle thrives on both American coasts, frequently found on rocky shores, seaweed clusters, and tide pools.
The origin of humming to snails remains unclear, but this activity has gained popularity over time [PDF]. Enthusiasts believe that by gently holding a periwinkle and humming, the snail will be drawn out by the sound, opening its operculum (a protective flap) and extending its head to greet you.
The effectiveness of this method is inconsistent. Even when a periwinkle emerges, it’s unclear if humming is the actual cause. Luke Miller, a marine biologist at San Jose State University and an expert in periwinkle behavior, conducted a small experiment involving humming to snails. His findings were less than promising. “Periwinkles often emerge after being handled, even without humming, so it’s questionable whether humming is necessary,” he explained to the New York Times.
A recent British study reached a comparable conclusion. Periwinkles tended to emerge about 15 seconds after their opercula were tapped, suggesting curiosity rather than auditory response.
Another factor to consider is that snails lack ears. They are incapable of hearing sounds as humans do, though they can detect vibrations in their environment.
Humming to snails is akin to flossing—there’s no concrete proof it works, but that doesn’t mean it’s entirely ineffective. As long as you handle snails and other wildlife gently and respectfully, there’s no harm in continuing your seaside serenades.
