Hellbender salamander resting among river rocks underwater

Amphibia · Urodela

Hellbender

Cryptobranchus alleganiensis

Fully aquatic giant salamander that breathes almost entirely through deeply wrinkled, fold-covered skin rather than lungs or gills, requiring cold, fast-flowing, oxygen-rich water beneath large flat rocks.

Realm
Freshwater
Conservation status
VUVulnerable
Data provenance

This range is an occurrence-derived learning extent, not an official assessment range map. See the methodology page for the complete pipeline. GBIF.org occurrence density (GBIF Maps API v2) · 1° global raster; derived from GBIF per-cell occurrence density, vagrant-trimmed by a cumulative record-count threshold, morphologically closed, small-and-distant components pruned, clipped to a Natural Earth 1:110m realm mask.

Method and version
Evidence snapshot

A sample of openly-licensed occurrence records retained after quality filtering. 534 licence-filtered records across 59 1° cells, retrieved 2026-08-24.

Inspect on GBIF
Retained datasets (20)