Record no. MRB-2026-007236

World's Largest Coral Reef System

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.

More than 2,900 individual reefs and about 900 islands stretching over 2,300 km; a UNESCO World Heritage Site since 1981. Location: Coral Sea, off Queensland, Queensland. Key figure: 2,300+ km long. Part of the One State One Record (Australia) campaign. Reference record compiled from public sources; not certified by The Book of World Records. Source: https://en.wikipedia.org/wiki/Great_Barrier_Reef