Coral Reefs
Largest living natural wonder of the world!
The Great Barrier Reef in Australia is the largest coral reef ecosystem on the planet.
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.
This page was built by Olivia Roorbach