ELI5: Explain Like I'm 5

Marimo

Marimo is like a little moss ball that grows in water. It can look like a fluffy green toy or a tiny green planet. It’s basically a bunch of algae that form a ball shape all by themselves. You can get marimo at pet stores, and they make good friends for fish in tanks. Some people even keep them in jars on their desks or shelves. They need water and sunlight to grow, and can live for many years if taken care of properly. They are also really cute to look at!
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