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great barrier reef
QUEENSLAND, AUSTRALIA
The seas of Australia’s Great Barrier Reef are a rhapsody
in blue, a shifting mosaic of sapphire, cobalt, and aqua-
marine, beneath which lies a still more beautiful world
of almost infinite marine variety. Spread across 133,000
square miles (344,000 sq km), the reef is the world’s
largest living structure.
An aerial view of part of the Great Barrier Reef around
Australia’s Queensland coast, a structure so large it can be
seen from outer space