Correction for the size of The Great Barrier Reef
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How big is 6,733,270,000 square perches?
It's about half as big as The Great Barrier Reef
The size of The Great Barrier Reef is about 13,800,000,000 square perches.
(a.k.a. Barrier Reef) (Coral Sea, off Queensland, Australia) (approximate)
The Great Barrier Reef, the largest such reef in the world, covers about 13,800,000,000 square perches. Reefs, such as the Great Barrier, grow in diameter at a rate of 1 to 3 cm per year.