Asian Tramp Snails in Florida: Cute but Definitely Not Native

When I was little, I used to collect the tiny snails I found outside and make little “snail houses” for them. I’d gather leaves and sticks and create tiny homes for my new snail friends. So, I’ve always thought snails were pretty cute.

Recently, however, I started noticing much larger snails slithering around my yard here in Florida. Of course, I had to stop and take a closer look.

They are really cute, but I also found out something I wasn’t expecting: the snail I photographed appears to be an Asian tramp snail (Bradybaena similaris), a nonnative and invasive snail found throughout Florida.

What Is an Asian Tramp Snail?

The Asian tramp snail, scientifically known as Bradybaena similaris, is a terrestrial snail believed to have originated in eastern Asia. It has since spread throughout tropical and subtropical regions around the world.

Florida’s warm temperatures, frequent rain and high humidity provide the type of environment these moisture-loving snails enjoy. And it’s been raining a lot lately!

They’re not enormous snails, despite looking considerably bigger than the tiny snails I remember finding as a kid. Mature Asian tramp snails are generally around half an inch across, although their size can vary.

How to Identify an Asian Tramp Snail

Asian tramp snails have rounded shells that can be brownish, yellowish or tan. Some have a darker brown band running around the shell, although the coloring and markings can vary.

Their shells generally have about five whorls, and mature snails may have a slightly flared opening around the edge of the shell.

There’s also a small opening or depression called an umbilicus on the underside of the shell that can help with identification.

Based on its appearance and the fact that this species is established in Florida, the snail in my photos appears to be an Asian tramp snail. However, several Florida land snails can look similar, so I’m treating my identification as probable rather than absolute.

Why Is It Called an Asian Tramp Snail?

I was curious about the name because “Asian tramp snail” is certainly an unusual thing to call a cute little snail.

The “Asian” part refers to where the species is believed to have originated, in Asia. The “tramp” part comes from an older term used for species that are particularly good at hitching rides with humans and establishing themselves in new places.

Asian tramp snails can accidentally travel in potted plants, soil, nursery stock and other landscaping materials. Over time, they’ve managed to spread far beyond their original range and establish populations in warm climates around the world, including Florida.

So the name basically describes a snail from Asia that has become a very successful world traveler—although I’m pretty sure the one in my yard didn’t make the trip here entirely on its own.

Are Asian Tramp Snails Invasive in Florida?

Unfortunately, yes.

The Asian tramp snail is not native to Florida and has successfully established populations here. It can become quite abundant in residential areas, gardens and landscaping.

One of the problems with these invasive snails is that they like to eat plants.

Asian tramp snails can feed on ornamental plants, flowers, vegetables and various crops. A single snail crawling through the yard isn’t necessarily going to destroy your garden, but a large population can become a problem.

Finding one also made me realize that I probably shouldn’t encourage them to stick around, no matter how cute they are.

What Should You Do If You Find an Asian Tramp Snail?

My childhood instinct would be to build it a tiny house and give it some leaves.

Apparently, that’s not the best plan for an invasive snail.

If you find one, you don’t have to exterminate it, but don’t relocate it to another yard, park or natural area. Moving invasive species can help them spread to places they haven’t already reached.

If you’re finding a lot of snails around your home, check your garden and landscaping for signs of plant damage. You can also make the area less appealing to snails by removing unnecessary piles of wet leaves and debris where they can hide and keeping overly damp areas under control.

Most importantly, don’t collect invasive snails and release them somewhere else.

Should You Touch Wild Snails?

It’s best not to pick up wild snails with your bare hands.

Terrestrial snails and slugs can potentially carry parasites and microorganisms. One of the better-known examples is rat lungworm, a parasite that can use certain snails and slugs as intermediate hosts.

That doesn’t mean you need to panic if you see a snail crawling across your patio. The bigger concern is accidentally ingesting a contaminated snail or slug.

Still, it’s a good idea to wear gloves if you need to handle a wild snail and wash your hands afterward. Children should also be discouraged from playing with wild snails—which is advice little me definitely wasn’t following.

What Do Asian Tramp Snails Eat?

Asian tramp snails aren’t particularly picky eaters.

They feed on a variety of plant material and may munch on flowers, foliage, vegetables and fruit crops. Tender leaves and new plant growth can be especially appealing.

If you start noticing a lot of these snails around your landscaping, check your plants for irregular holes, damaged leaves and other signs of feeding.

Plants can also provide transportation for invasive snails. Snails and their eggs can hide in pots, soil and landscaping materials, allowing them to travel much farther than they ever could on their own.

Those Long Tentacles Have Eyes

One of the reasons I think snails are so cute is those little antenna-looking stalks sticking out of their heads.

They’re actually tentacles.

Land snails have two pairs. The longer upper tentacles have eyes at their tips, while the shorter pair help the snail sense what’s immediately around it.

When a snail feels threatened, it can retract those tentacles, which is why its entire little face seems to suddenly disappear.

More than You Probably Wanted to Know About Snails

If you’re still reading this, you must have really wanted to know about snails! I love learning about the wildlife I find in my yard, whether it’s a little snail or a big barred owl.

So, thanks for joining me in today’s quest for snail knowledge.