Sorry this plant Marimo Moss Balls is now banned in the USA. It is not legally for sale anywhere as of Mar 2021.
Here is an excellent and attractive addition to any freshwater tank. The Marimo ball, also known as Moss ball or Japanese moss ball is actually a filamentous green algae (Chlorophyta) found in a number of lakes in the northern hemisphere: Japan, United Kingdom, Russia, Iceland and Northern Europe.
In its natural habitat, the Marino ball is moved around by undercurrents and sink or rise in order to receive plenty of light to carry out photosynthesis. It ranks among the strangest plant on Earth and has been granted the status of National Treasure in Japan. In Iceland it is believed that taking good care of the plant will “make your wishes come true”.