Ladoga seal Ladoga seal The Ladoga ringed seal (; Pusa hispida ladogensis), is a freshwater subspecies of the ringed seal ("Pusa hispida") which are found entirely in Lake Ladoga in northwestern Russia. The subspecies evolved during the last ice age, about 11,000 years ago. As the glaciers retreated and water levels changed, the Baltic ringed seal (including Ladoga seals) was trapped in freshwater lakes and separated from the Arctic ringed seal. It is related to the even smaller population of Saimaa ringed seals in Lake Saimaa, a lake that flows into Ladoga through the Vuoksi River. The adult Ladoga seal grows to
Finnish reconquest of Ladoga Karelia (1941) his forces further and the 1st Jaegar Brigade finished its 110 km long contested advance when it reached the shore of lake Ladoga at Koirinoja the next day. This also severed the connections between the Soviet forces in the area. While Talvela continued his advance both further east along the shore of the Lake Ladoga as well as further inland the Soviets had reorganized some of their forces and were rushing reinforcements to the east shore of Lake Ladoga. Soviet 452nd Motorized Infantry Regiment set up defensive positions around the town of Salmi; however advancing Finnish forces encircled the defenders