Islamia coronadoi

Islamia coronadoi is a minute freshwater snail belonging to the family Hydrobiidae, a group of tiny gastropods often called spring snails for their close association with groundwater-fed habitats. Like other members of its genus, this species is a micro-endemic, meaning it is restricted to a single spring, spring complex, or short stretch of stream, typically in the Iberian Peninsula where most Islamia species have been described. Its shell is small, pale, and thin-walled, features common to hydrobiid snails that spend their entire life cycle submerged in cool, oxygen-rich water.

Because these snails rarely move beyond their source habitat, they are exceptionally vulnerable to any disruption of local hydrology. The species is classified as Critically Endangered (CR) by the IUCN, reflecting its extremely restricted range and the fragility of the spring habitat it depends on. Groundwater extraction for agriculture and domestic use, spring modification or capping, and pollution from nearby land use are the principal pressures acting on this and related spring-dwelling snails, since even minor changes in flow, temperature, or water chemistry can eliminate a population entirely.

Conservation attention for narrow-range hydrobiid snails has increased in recent years, with regional environmental authorities in Spain incorporating spring-site protections and water-quality monitoring into broader freshwater biodiversity strategies. Documentation of Islamia coronadoi and its close relatives has also improved through targeted malacological surveys, which is helping build the baseline knowledge needed to design effective site-specific safeguards. While detailed population figures are not available, the recognition of its CR status has helped focus conservation planning on protecting the specific spring habitat it relies on, offering a genuine, if fragile, pathway toward its continued survival.

Islamia coronadoi inhabits small freshwater springs and spring-fed watercourses, relying on clean, consistently flowing groundwater for its highly localized and specialized microhabitat.