Saimaa ringed seal

Saimaa ringed seal
Saimaa ringed seal pictured in 2023
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Parvorder: Pinnipedia
Family: Phocidae
Genus: Pusa
Species:
Subspecies:
P. s.
Trinomial name
Pusa saimensis
(Nordquist, 1899)

The Saimaa ringed seal (Pusa saimensis, Finnish: saimaannorppa) is a species of seal. It is among the most endangered seals in the world, having a total population of only about 500 individuals. The only existing population of these seals is found in Lake Saimaa, Finland. It has lived in complete isolation from other ringed seal populations for around 9,500 years, and have diverged into a morphologically and ecologically different species or subspecies. The population is descended from ringed seals that were separated from the rest when the land rose after the last ice age. This seal, along with the Baikal seal, the Ladoga seal, and the Ungava seal, is one of the few living freshwater seals.

The Saimaa ringed seal was previously considered a subspecies of ringed seal called Pusa hispida saimensis.