I don't know the company, but there was one sold in a local toy shop some years ago. The idea was that this was essentially one "slice" of a pond, think of a ve

I don't know the company, but there was one sold in a local toy shop some years ago. The idea was that this was essentially one "slice" of a pond, think of a very thin aquarium tank that was in the window. It had been seeded with a variety of small plants, algae, tiny critters and the like. Meant to be a closed system, where it was all what was inside the glass, plus the sunlight from putting it in the window. Very cool, you could see tiny things swimming around in there.