There’s Been a Tiny, Eyeless Snail Discovered Deep Underground in Georgia’s Springs
A rare snail found in underground springs is giving scientists new clues about ancient ecosystems.
Deep beneath the limestone plateaus of western Georgia, a creature barely larger than a grain of rice has been hiding in the darkness—and scientists have just given it a name.
A new species of underground snail, formally named Gveleshapia kvevri, has been identified from specimens collected in two springs in the country of Georgia. The discovery, published in ZooKeys, is based on research by Elizaveta M. Chertoprud of Lomonosov Moscow State University.
The snail is the first formally described member of its subgroup in the region, and its existence is expanding what scientists know about where these organisms live and how far their range extends.
A tiny, eyeless snail built for the dark
At roughly 2 millimeters—just 0.08 inches—the snail is minuscule. It has a narrow, cone-shaped shell and no eyes, traits linked to its life in total darkness underground. Scientists classify it as a stygobiont species, meaning it is adapted to living in subterranean water systems.
The loss of eyes and color are direct adaptations to its lightless habitat. The snail lives in rock crevices where water flows, spending its life entirely beneath the earth’s surface.
Its anatomy stood out to researchers as unusual compared to related snails. The species lacks a bursa copulatrix and has a three-lobed penis—features that did not match any known genera within its subgroup.
Finding this snail was no easy task. Specimens were collected from underground stream sediment, and after years of sampling, only seven live individuals were recorded.
The two springs where the snail was found sit about 1 mile (1.6 km) apart on a limestone plateau and are possibly connected by the same aquifer. One spring is cave-based with a collector, while the other rises through sediment near water pipes.
Fossils or individual snails mostly appear after water movement brings them to the surface, according to the study. This suggests a larger hidden population exists deeper underground, beyond the reach of current sampling efforts.
The rare snail that is rewriting the map
Genetic evidence places the new species within the Islamiinae subgroup of snails. However, the analysis also revealed classification issues within the larger family, suggesting scientists may need to rethink how some of these organisms are categorized.
Before this discovery, the Islamiinae subgroup was thought to be mostly Mediterranean in distribution, found primarily in Spain, Italy and the Balkans. The identification of Gveleshapia kvevri in the Caucasus region of Georgia extends t
he group’s known range significantly further east.
The finding hints at older evolutionary lineages that may have been preserved underground, shielded from the environmental changes that reshaped life on the surface.
The species name “kvevri” comes from a traditional Georgian clay vessel used in winemaking. One of the two springs where the snail was found emerges from such a jar, connecting the creature’s identity to Georgia’s deep cultural heritage.
Why this tiny, eyeless snail matters
The discovery highlights hidden biodiversity in groundwater systems—ecosystems that remain largely unexplored and poorly understood. Creatures like Gveleshapia kvevri are reminders that significant biological diversity exists in places most people never see.
The snail’s rarity raises conservation concerns. With only seven live specimens recorded and its habitat limited to two known springs, the species could be vulnerable to pollution or land-use changes that affect groundwater quality.
For now, this tiny eyeless snail stands as evidence that even the most overlooked corners of the natural world can hold surprises—if scientists know where to look.
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