Bruneau Hot Springsnail
One of Idaho’s smallest endemics survives only in warm-spring outflows where groundwater quantity, temperature, and chemistry must remain within a narrow envelope.
Artwork inspired by Robert Limbert
The Bruneau Hot Springsnail is not a practical target for ordinary wildlife spotting. It measures only a few millimeters and shares habitat with other tiny snails; meaningful identification requires expertise. The informative observation is the spring system itself—warm water, algae, flow path, and the narrow wetted margin where grazing can occur.
Groundwater pumping, diversion, trampling, contamination, and collection can alter the entire habitat. View only from authorized public places, never enter a protected spring, and do not scrape algae or stones looking for shells. An apparently minor change in discharge can eliminate occupied microhabitat.
- Size
- Only a few millimeters
- Range
- One Idaho spring system
- Status
- Federally endangered
Quick guide
- First field mark
- A minute dark freshwater snail only a few millimeters long—identification requires expert examination, not casual naked-eye certainty
- Then confirm
- Geothermally warmed spring outflows in the Bruneau River drainage of southwestern Idaho
Field evidence for Bruneau Hot Springsnail
- Establish structure
- Treat “A minute dark freshwater snail only a few millimeters long—identification requires expert examination, not casual naked-eye certainty” as a field hypothesis.
- Challenge the first view
- After the overall form, confirm Geothermally warmed spring outflows in the Bruneau River drainage of southwestern Idaho.
- Check when and where
- Place Bruneau Hot Springsnail within “Geothermally warmed spring outflows in the Bruneau River drainage of southwestern Idaho”.
- Keep behavior natural
- Leave Bruneau Hot Springsnail an open retreat and never pursue it into cover, a den, a burrow, or a resting site.
Good to know
Precise occupied locations are sensitive and may be on closed or private land. Do not follow crowd-sourced coordinates or attempt macro photography in the outflow; use agency interpretation and report any observed habitat damage.
Notice these
- A minute dark freshwater snail only a few millimeters long—identification requires expert examination, not casual naked-eye certainty
- Geothermally warmed spring outflows in the Bruneau River drainage of southwestern Idaho
- Lives and grazes continuously in a narrow band of warm spring outflow; tiny size makes careful habitat observation more realistic than seeing individuals.