This photo is titled "Microbe Family Tree."
This is scum. Scum is a microbe that hangs onto rocks at the seashore. It is a kind of algae. If you find any algae at the seashore, it might be scum, or the microbe algae.
Here is mad cow on a bike. He always likes driving around the backyard. Another name for mad cow is bovine spongiform encephalopathy. The funny thing about the giant microbe mad cow is that it has black and white spots and udders like a real cow. The actual microbe, mad cow, does not have black and white spots and udders.