Module 1 of 6 · 8–10 minutes
What ticks are—and are not


Want to see real-life ticks? Visit the Tick ID Centre to explore representative species and photographs for your region. Appearance alone cannot diagnose infection or replace medical, veterinary or public-health advice.
Some ticks can transmit infections, including Lyme disease. Not every tick is infected and most tick bites do not result in illness, but awareness helps people reduce bites, find attached ticks and remove them promptly and correctly, and recognise when symptoms need appropriate health advice. The course teaches calm, proportionate action—not fear or self-diagnosis.
Ticks are arachnids, related to spiders and mites. They do not fly or jump. A tick waits on low vegetation or moves on an animal, then attaches when a person or animal makes contact.
The lifecycle begins with eggs. A larva has six legs. After developing, a nymph has eight legs, and an adult also has eight. Ticks can be extremely small, and their colour, shape and size vary by species, life stage, sex and whether they have fed.
The illustrations are enlarged to make the stages easier to study. Most tick bites do not result in illness. Awareness is about practical habits, not fear of nature.
Your achievement
Complete both activities to achieve module 1 of 6.