Why don’t anemones sting clownfish?

The reason that Nemo can live happily in a sea anemone without being stung is that he has a symbiotic relationship, meaning they benefit from each other.  protected by a layer of mucus making them immune. Not only this but anemones and clownfish also have a mutually beneficial relationship.

It’s quite obvious that sea anemone homes offer a nice layer of protection from predators for the brightly coloured clownfish, but what does the clownfish do for the anemone? Well, the anemones get nutrients from the waste produced by clownfish. Yummy.