Correction for the size of The Great Barrier Reef
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How big is 908,700,000,000 square feet?
It's about one-fourth as big as The Great Barrier Reef
The size of The Great Barrier Reef is about 3,750,000,000,000 square feet.
(a.k.a. Barrier Reef) (Coral Sea, off Queensland, Australia) (approximate)
The Great Barrier Reef, the largest such reef in the world, covers about 3,750,000,000,000 square feet. Reefs, such as the Great Barrier, grow in diameter at a rate of 1 to 3 cm per year.