1.Types of coral. there is the brain coral and the staghorn coral.
2.soft coral and hard coral. soft coral dose not have a skeleton body. and a hard corals build reefs.
3.A variety of fish and what they can do. there are prawns and hawkfish that can camouflaged in bright pink and light red.
4.Marine life. a variety of Marine life types of sea creatures live in coral like clown fish and Eels and prawns.
5. The reef. the great barrier reef is the largest and most widest reef in the world.