Clownfish, a small tropical fish found in the midst of sea anemones, are often not stung. What type of relationship might the clownfish have with the sea anemones that would explain this behavior?

Mutual-ism because the brightly colored clown fish will draw a bigger fish to eat him and therefore the bigger fish will be stung by the anemone and be eaten by the anemone. The little clown will just slide into the anemone.