Species at Risk

Banff Springs Snail


Physella johnsoni

Where does the Banff springs snail live?

The snail inhabits Kidney Spring, Upper and Lower Middle springs and four other thermal springs at the Cave and Basin National Historic Site on Sulphur Mountain in Banff National Park. Two of these populations were recently re-established. They had been extirpated from some of the ponds where the species had originally been found in the 1920s. Only in these unique hot springs do the right biological, chemical and geological conditions converge to form the habitat that supports this mollusc.

A map showing Banff springs snail range in Banff National Park and the world.
The snail inhabits Kidney Spring, Upper and Lower Middle springs and four other thermal springs in Banff National Park.
© Parks Canada