Question: What do gut parasites look like?

Erin Pallott answered on 4 Apr 2025:

Parasites come in all shapes and sizes! There are single-celled parasites which you can’t see in the gut without a microscope. Parasitic roundworms are animals and look a bit like earthworms, but smoother and often paler/white. These can be tiny (1-2mm) all the way up to 30cm depending on the species. Tapeworms look like pieces of tape like the name suggests. Very long and flattened shape with a body that comes apart in segments.
So they can look pretty different!