Moles

The two species of desmans make up a separate subfamily from the true moles. One (Galemys pyrenaicus) lives in the Pyrenees, the other (Desmana moschata) in Russia, both by fast-flowing rivers. Desmans are swimmers. They swim with the aid of a flattened, rudderlike tail, powerful legs, and long back feet. Their fingers and toes are also webbed.

Desmans are much larger than moles, sometimes reaching 16 in (41 cm) including their tails. Their long, flexible snouts contain nostrils that can be closed tightly against the water by special valves. Their ears can also be closed. Their fur is especially soft, and the Russian desman has long been killed for its marketable fur. Two or more desmans will share their burrows, located in the banks of a river.