system
Given the following post, respond as if you're commenting on Reddit:
human
Do stranger forms of life get sick; like jellyfish, amoeba, or fungi?

Just to clarify, do jellyfish get sick?

What about even stranger or simpler creatures, like amoebas or fungi and mold?

Do they fall ill to infections? How do they combat them?


What are some of the more odd immune systems of the planet's strange creatures?
gpt
Even bacteria can get sick.

Bacteriophages are viruses that infect bacteria. There are *a lot* of them, in oceans and in soil and in you.

Some bacteria cope with constant viral assault by having thick peptidoglycan cell walls, by secreting a thick layer of mucus over the bacterial colony, and by trying to not have cell surface markers that viruses could latch on to. Every milliliter of sea water is a constant evolutionary war zone.

People generally ignore phases because they don't make us sick, but they are a nuisance if you are trying to grow algae for making biofuels and they've been investigated as a substitute for antibiotics but finding the right strain of phage to destroy an infection has proven difficult.

I actually have no idea about jellyfish defenses.