Ladoga seal activities. The Ladoga seal is listed as an Appendix II species under the Bern Convention and also included in the Red Data Book of the Russian Federation. 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
Ladoga, Indiana in 1878. The original building still stands in Ladoga. Known as Normal Hall, it was listed on the National Register of Historic Places in 1996. The town of Ladoga lays claim to the Chicago World's Fair Ferris Wheel. Designed by Pittsburgh, Pennsylvania, bridge-builder George Washington Gale Ferris Jr., Luther V. Rice of Ladoga agreed to build it. After the Chicago World's Fair it was placed in Ferris Wheel Park for a while, then moved to St. Louis, Missouri, for its World's Fair. Ladoga is located at (39.915223, -86.799271). According to the 2010 census, Ladoga has a total area of ,