Proteus anguinus, also known as olms, are native to countries along the Adriatic Sea. They can be found as far north as Slovenia and northern Italy, continuing southward through Croatia, and Bosnia and Herzegovina. It is uncertain whether the range continues south to Montenegro and Serbia. Isolated populations of Proteus anguinus have been introduced in the French Pyrenees Mountains and northeastern Italy.
Biogeographic Regions: palearctic (Introduced , Native )
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