The largest living structure on Earth is the Great Barrier Reef. Located in the Coral Sea, off the coast of Australia, it comprises more than 2,900 individual reefs and 900 islands.
Key Facts:
Spanning over 2,300 kilometers (1,400 miles)
Covering an area of approximately 344,400 square kilometers (133,000 square miles)
Visible from space
Home to a vast array of marine life, including over 1,500 species of fish
