"Marimo (Japanese: 毬藻), also known as Lake ball or Moss Balls in English, is a species of filamentous green algae (Chlorophyta) found in a number of lakes in the northern hemisphere. The name though refers to a certain rare growth form of the species where the algae grow into large green balls with a velvety appearance. Colonies of such balls are known only from Iceland, Japan and Estonia." Marimo Wiki
If anyone is blessed with an over abundence of these cute little guys, please let me know. I would love to have a couple for my new planted aquarium. I have many interesting things that could be offered in trade.