Examples include roundworms
Pulling the leeches off to clear her vision at the start of the cycling stage, the worm notices a fellow competitor has forgotten to put her cycling shoes on. The spectators along the route are able to see her anaemic toes (nematodes), the result of a roundworm infection.
Examples of nematodes
This type of nematode can infect the human gut. It can grow up to 35cm long.
This nematode lives in the soil and as a parasite in plant roots. It can cause considerable damage to crops.