It is so emblematic of the lake and surrounding region that it has been designated as a special national monument. Marimo in Lake Akan (Photo: Isamu Wakana) Contact: Sohail Keegan Pinto [email protected] 81-117-062-185 Learn about these mysterious beings along with a tour guide. In Japan, Lake Akan in Hokkaido is the best known habitat of the marimo. It is so emblematic of the lake and surrounding region that it has been designated as … Why do these large, round marimo exist? They also have Marimo rare algae ball formations that only occur there at Churui Island and in Iceland where the water conditions are the same. It is so emblematic of the lake and surrounding region that it has been designated as a special national monument. Lake Akan (Akan-ko), probably the most famous Japanese lake, is found in the North-Eastern part of Hokkaido Island, in a caldera-type volcanic crater which is guarded by 2 volcanic peaks: Oakan-dake (height: 1,371 meters) and Meakan-dake (height: 1,503 meters). and onto the mud pools or bokke as they are known, underground thermal activity quite near to the edge of Lake Akan. While in Japan, Marimo sometimes surpass the size of a big basketball. The Marimo was declared National Treasure of Japan in 1921 and even designated as a Special National Treasure in 1952. Price: ¥3900 Time required: About 3 hours Marimo in Lake Akan (Photo: Isamu Wakana) The marimo is the aggregative form of the freshwater alga Aegagropila linnaei. In Japan, Lake Akan in Hokkaido is the best known habitat of the marimo. In Japan, Lake Akan in Hokkaido is the best known habitat of the marimo. The largest found in lake Akan was approximately 12 inches in diameter. The marimo is the aggregative form of the freshwater alga Aegagropila linnaei.In Japan, Lake Akan in Hokkaido is the best known habitat of the marimo. In Japan, Lake Akan in Hokkaido is the best known habitat of the marimo. Check the URL below for available times. Lake Akan was formed by volcanic activity approximately 6,000 years ago. The marimo is the aggregative form of the freshwater alga Aegagropila linnaei. The marimo is the aggregative form of the freshwater alga Aegagropila linnaei. The plant was named "marimo" by a Japanese botanist Tatsuhiko Kawakami (川上龍彦 Kawakami Tatsuhiko) in 1898. The lake’s fame is due to an aquatic plant … In the mid-1920's marimo in Lake Akan were greatly affected by both thievery and decreases in the lake's water level. Mari being a bouncy play ball and Mo a generic term for plants that grow in water. A marimo festival, led by Ainu (the native people of northern Japan), is held every October in Akanko Onsen on the shore of Lake Akan.It was begun in 1950, when there was serious concern about the survival of the marimo, with the aim of awakening people’s love for the species. In Japan, initiatives have been made from a long time to protect it. It is so emblematic of the lake and surrounding region that it has been designated as a special national monument. These tours are only available at specific times. It is so emblematic of the lake and surrounding region that it has been designated as a special national monument. A tour that focuses on moss balls, the symbol of Lake Akan.