Lake Akan
Located within Akan National Park, Lake Akan is the fifth largest freshwater lake in Hokkaido. Lake Akan is famous as the habitat of the Marimo alga and the Kokanee landlocked salmon, both of which have been designated as Special Natural Monuments. In winter, the entire lake freezes over, enabling people to enjoy winter activities and sports such as fishing for Japanese Pond Smelt through the ice-skating, etc.