The Great Barrier Reef is absolutely beautiful! Today we got to go swimming with the dolphins, and we saw all of the biodiversity that co-exist together in the ecosystem. The biodiversity of the reef shows how important it is to keep this ecosystem healthy to keep the different species safe. You can see in our picture all the different types of fish that exist in the reef. 

(http://ecsuabroad.wordpress.com/2012/11/05/best-beach-vacations-asia-south-pacific-mexico/)

Question: How many different forms of coral make up the Great Barrier Reef?