I noticed a green layer (presumably algae) growing on the terracotta pots on my terrace. All the pots have greenish growth on them, but they all look very different. One pot had a layer which was considerably thicker, and easy to scrape off.
I soaked bits of it in regular tap water and let it sit for a few hours. When I looked at the sample under my Foldscope, I was blown away by the many different organisms I saw!
There are small round transparent organisms; slightly larger round brownish organisms; drop-shaped transparent ones with lots of little circles inside and longer transparent organisms with lots of little circles inside. All of them are moving very fast.
The diverse ecosystem around a clump of vegetation:
Chasing the swimmers around:
Please do let me know in the comments if you know about the growth on the pot and its inhabitants.