1. Where Are Centipedes Found, and What Do Those Places Share?
The Missouri Department of Conservation, a US state agency, describes centipedes as animals familiar to anyone who has overturned rocks and logs, sifted through leaf litter, or dug in the soil. It also says that, whatever the habitat, they are almost always confined to damp, moist, humid spots within it [1]. The usual hiding places are soil, leaf litter, and the undersides of stones, logs, and bark.
That matches a scientific overview of centipedes in caves in Slovenia, which says centipedes of temperate regions can be found in forest litter, soil, or caves [3]. (Temperate means the mild zones between the tropics and the poles, where most of the US, Britain, and Japan lie.)
So the places look different, but they are alike in two ways: they are sheltered from sun and wind, and they stay moist. The next question is why that matters so much to a centipede.
2. Why Does a Centipede Need Damp Air?
The Missouri guide says centipedes have moisture-seeking and dryness-avoiding behaviors. They burrow into soil, avoid bright light, move toward dark places, and are active only at night. Some species can even become inactive when it gets too dry, and many quickly move away as the humidity drops [1]. In other words, a centipede does not simply happen to be found in damp places. It works at staying there.
Why? A common explanation is about breathing. Insects and centipedes breathe through small openings along the body called spiracles. Many recent textbooks, according to one paper’s abstract, hold that centipedes cannot close their spiracles. Here the sources disagree. A 2002 study of five centipede species from southern Africa found that one of them, Cormocephalus morsitans, can close its spiracles fully, and the authors suggest closing may be more widespread in arthropods than people thought [2]. So “centipedes cannot close their spiracles” is too simple, and it should not be repeated as a rule for every species.
What can be said safely is smaller: many centipedes show behavior that looks like dodging dry air, and the field guide treats that as a habit of the whole group [1]. How much water each species loses, and through which route, is a question the sources here do not answer.
If dampness is what matters, the most reliable damp place is underground.
3. How Deep Underground Do Centipedes Go?
Soil keeps its moisture longer than the surface does, so it makes sense that it is home to many centipedes. One group seems built for it. The Missouri guide describes the soil centipedes (the order Geophilomorpha) as the order with the most known centipede species, an estimated 4,000 worldwide. They lack eyes, and they can burrow nearly 30 inches (about 75 cm) deep [1]. “Estimated” matters here: counts of centipede species depend on who is counting and how, and the figure may change as more are described.
The soil is still giving up secrets, even in a country with a long tradition of studying animals. In 2026, Kyoto University announced that researchers had shown six species of the genus Cryptops live in Japan, and had described one of them as new. In Japanese these tiny soil centipedes are called menashi-mukade, “eyeless centipedes.” The announcement says they are very rare in Japan, which is why it had been a mystery how many species there were and where they came from. The team used DNA analysis and a close look at specimens collected around the country, and the study came out online in the journal Invertebrate Systematics in August 2026 [4].
The same work found that Japan’s species do not all share one ancestor. Some seem to be old residents that have been there since Japan was part of the continent, while others look like newer arrivals that crossed the sea [4]. A garden-sized patch of ground can hold animals with very different histories.
Soil is dark and damp, but it is not the only place like that. What about places with no light at all?
4. Do Cave Centipedes Live Only in Caves?
It is easy to imagine a cave centipede as a special cave-only animal. A team that surveyed 160 sites in caves of Slovenia, a country in southeastern Europe known for its limestone caves, found 21 species of stone centipedes (the order Lithobiomorpha). Only three of those are considered exclusively underground species. The rest are surface dwellers [3].
Three out of 21 is about one in seven. So in this survey, most centipedes that wander into a cave also live above ground. The paper discusses why surface-dwelling species enter caves and notes that the role these centipedes play in caves remains to be studied [3]. I read only the abstract and the repository page, so I cannot describe the authors’ explanation.
One caution: this is one region and one order of centipedes. It shows that cave centipedes are not all cave specialists. It does not give a worldwide share.
5. Can a Centipede Live Where Seawater Reaches?
Salt water seems like the opposite of what a dry-avoiding animal wants, but the idea is less odd than it sounds. A beach has plenty of damp, sheltered cracks.
A French study in the spring of 2019 searched beaches in and around Port-Cros National Park, on the Mediterranean coast, by hand along set lines. It collected 120 centipedes, 108 of them soil centipedes. Among them were species that prefer salty shores: Henia bicarinata, Geophilus fucorum, and Tuoba poseidonis. According to the abstract, the kind of ground, including gravel and pebbles, was linked to where these salt-loving species were found [5]. Again, this is a result from one coast. Beaches elsewhere, such as in Japan, may differ.
So the pattern holds even here. Centipedes do not need a forest. They need a shelter that stays moist, and a pebble beach can provide one.
6. How Can You Test the “Damp Shelter” Idea Safely?
Please do not go hunting for centipedes. The Missouri guide says that larger species can give a painful bite if handled, though most small ones are too tiny to bite people at all [1]. If you see one, watch from a distance and leave it alone.
You can still test the idea without touching any animal. After rain, compare the ground in a sunny spot with the ground in the shade of a tree or wall, and see which one dries first. You can compare how dark the soil looks, since damp ground often looks darker, though color alone may not show exactly how damp it is. If the shaded ground stays damp longer, you have found the kind of place the sources describe. If the result surprises you, think about wind, sun, and the type of soil.
Two questions are worth taking away. Why do some species reach the seashore when others stay in forest soil? And what lives in the soil under your own feet that has not been named yet? The Kyoto announcement and the Missouri guide are good places to start reading.