It is essential to the fish forming one of nature's great teams with the sea anemone - they are dependent on each other to survive and the slime protects the Clownfish from the anemone's sting.

The giantgreen sea anemone, Anthopleuraxanthogrammica, is a formidablepredator, though it waits for unsuspecting prey to wander within reach ratherthan actively hunting.

The most surprising of these is that, genewise, the humble sea anemone looks a lot like a vertebrate, and not much like an insect or a worm.