It's colloquially referred to as a marimo moss ball, but it's actually an algae rather than moss. It's also flippin' cute, as plants go. And, although I put it in front of the window to photograph it, they're used to living in the dim light at the bottom of lakes so I'll be keeping it away from direct sunlight.
We got mine from Jadsimo and it arrived very quickly and safely. What do you guys think about marimos? Are they the perfect low-maintenance pet?