Marimo are also known as Cladophora ball, Moss ball and Lake ball. They're a rare form of filamentous green algae, in which the algae grow into large green balls with a pleasing velvety appearance.
The species can be found in a number of lakes and rivers in Japan and Northern Europe. Colonies of Marimo balls are known to form in Japan and Iceland.
The plant was named Marimo by Japanese botanist Takiya Kawakami in 1898. Mari is a bouncy play ball and Mo is a term for plants that grow in water. The native names in Ainu are Torasampe (lake goblin) and Tokarip (lake roller).They are sometimes sold in aquariums under the name "Japanese moss balls" although they are unrelated to moss.
The glass jar is approximately 15cm tall, with a cork lid which has a small hole to allow air flow. There are 3 Marimo balls and gravel in each jar.
Change the water occasionally and give the jar a gentle sideways shake to encourage the moss balls keep their round shape.
* Please note, this item is shipped without water for ease of transportation. On arrival, please top up the jar with either tap water, rainwater or distilled water.