GREEN, MEAN, AND UNSEEN

Coral reefs are the largest structures made by living organisms. Architecture by teamwork.

✓ TRUE FACT
Reef systems can stretch for hundreds to thousands of kilometers—the Great Barrier Reef spans about 2,300 km. They’re built over centuries by countless tiny polyps depositing calcium carbonate.

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Coral reefs are the largest structures made by living organisms. Architecture by teamwork. | SmartAss Facts