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
Novaya Ladoga Volkhov and the Neva. It replaced the Old Ladoga Canal, built by Peter the Great, which thus became disused and decayed. The canals collectively are known as the Ladoga Canal. The district contains seven cultural heritage monuments of federal significance and additionally five objects classified as cultural and historical heritage of local significance. The federal monuments are the trading arcades, the Nikolo-Medvedsky Monastery, the monument erected to commemorate the opening of the Ladoga Canal, as well as two buildings related to the activities of Alexander Suvorov, who was a regiment commander in Novaya Ladoga, and the building hosted the headquarters