Great Barrier Reef-Blog 1

1. The Great Barrier Reef is considered the largest living structure in the world.
2. Calcium Carbonate
3. The red algae acts like glue, combining fragments of shell, sand, and coral with calcium carbonate.
4. It became a national park in 1975.
5. 33% is protected from fishing.
6. Current Reef appears 20,000 years old, Ancient Reef 500,000 years.