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The clown fish has a protective layer on its skin that protects it from some stinging corals.
Marc Eckert

Welcome to Australia, home of the Great Barrier Reef. The Great Barrier Reef is the largest collection of coral in the world. There are over 400 types of coral that can be found in the Great Barrier Reef but that is not all you will find. Fish and mollusks abound in the reef with over 1,500 and 4,000 varieties, respectively living on the reef. 175 species of birds along with sponges and crustaceans can also be found contributing to this diverse ecosystem.