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The Great Barrier Reef lies 12 to 50 miles off the northeastern shore of Australia. The amalgam of 2,500 reefs stretches 1,400 miles, covering an area as large as California. Many companies run day trips to the reef. Otherwise, Green, Heron and Lady Elliot Islands have good diving right from the beach. The vast shallows are inhabited by spotted eagle rays, manta rays, green sea turtles, spectacular nudibranchs, and hundreds of species of corals, reef fish and mollusks.
For more information: Poseidon Cruises


