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🏝️ Largest coral reef system

Great Barrier Reef · about 2,300 km (1,430 mi)

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🏝️ Largest coral reef system

about 2,300 km (1,430 mi)

Great Barrier Reef · Coral Sea, off Queensland

The biggest living structure on the planet, built by billions of coral polyps and visible from space. It shelters an extraordinary array of fish, turtles and molluscs.

Record at a glance

RecordLargest coral reef system
FeatureGreat Barrier Reef
Measurementabout 2,300 km (1,430 mi)
LocationCoral Sea, off Queensland
CountryAustralia

Read the Australia profile, or browse the whole World Extremes index.

This record belongs to our terumbu-karang collection, where every terumbu-karang in the world is catalogued.

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Figure is a widely-cited reference measurement. Stored statically on our server — no external call when you load a page.

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