Is 400 city blocks as big as The Great Barrier Reef?
It's about one-forty-thousandth as big as The Great Barrier Reef
The size of The Great Barrier Reef is about 16,000,000 city blocks.
(a.k.a. Barrier Reef) (Coral Sea, off Queensland, Australia) (approximate)
The Great Barrier Reef, the largest such reef in the world, covers about 16,000,000 city blocks. Reefs, such as the Great Barrier, grow in diameter at a rate of 1 to 3 cm per year.
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