Stretching more than 2,300 kilometers off the coast of Queensland, the Great Barrier Reef is the largest coral reef system on Earth and is often described as the largest living structure visible from space. It comprises nearly 3,000 individual reefs and hundreds of islands.
Record no. MRB-2026-005642
Largest Coral Reef System in the World
Reference Record – Not Certified
This record is compiled from publicly available sources for reference. It has not been examined or certified by The Book of World Records.