Raissipour: Commensalism

The Amphiprion ocellaris uses the sea anemone as a shelter of protection. It has a layer of mucus around its body that protects it from the anemone's sting. It does not harm the anemone but the anemone protects it from other animals so it has a safe habitat to live in.
http://4.bp.blogspot.com/_mP6apQATqB4/TMYRua78x3I/AAAAAAAAAGM/5HsnmRi-h0I/s1600/Anemone.jpg