Fauna
Amphibian

Austin Blind Salamander

Eurycea waterlooensis

Austin blind salamanders are entirely aquatic troglobites that spend their lives in total darkness within subterranean limestone fissures of the Edwards Aquifer. Paedomorphic throughout adulthood, they retain broad external red gills, unpigmented translucent skin, and vestigial eyes overgrown by skin tissue. Their flattened snouts and sensitive lateral line organs allow them to hunt blind, sensing minute vibrations created by small invertebrates drift-feeding in deep subterranean water.

SubterraneanEndemicAquatic
Austin Blind Salamander reference
Nthnjustice / CC BY-SA 4.0 · cc-by-sa
—observations
—countries
—peak records
VulnerableConservation statusIUCN Red List categoriesLCNTVUENCREWEXVulnerableRed List categories, explained →
Key facts
Diet & preyStygobitic amphipods, Copepods, Isopods
Predators
  • Barton Springs salamanders
  • Predatory fish
  • Cave crayfish
ThreatsGroundwater contamination, urban runoff, aquifer overdraft, and siltation
HabitatsDeep freshwater limestone caverns and subterranean spring fissures
Life span10–15 years
Classification
  1. FamilyPlethodontidae
  2. SpeciesEurycea waterlooensis
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
What to notice
Look for a pale, translucent pinkish body, bushy red gills, a shovel-shaped snout, and tiny dark eye spots beneath the skin.
Support conservation
Do not touch, capture, or disturb individuals found at spring openings, and report sightings directly to local wildlife biologists.
Responsible observation
  • Observation Windows: Look near the main fissures of Barton Springs where subterranean currents occasionally wash individuals to the surface.
  • Pollution Prevention: Rinse off sunscreens and lotions before swimming in spring pools to keep aquifer water pure.
Related species
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