👉 Microchidia, also known as microchaetes, are a family of protozoan parasites that primarily infect marine animals and humans. These organisms feed on the gut contents of their host through tiny spines or tendrils called chitin traps. They are characterized by their unique shape and size, which makes them difficult to see with the naked eye. Microchidia can cause serious diseases in some individuals but are not considered a major health threat due to their low prevalence and rapid elimination.