Great Barrier Reef is the most beautiful coral reef of the world. It is covered by thousands of corals under the surface of sea water. It is the most popular of tourists. The water is so limpid which make easier for tourists to see fish and corals clearly.
Not far beneath the surface of the Coral Sea, where the Great Barrier Reef lives, parrotfish teeth grind against rock, crab claws snap as they battle over hiding spots, and a 600-pound grouper pulses its swim bladder to announce its presence with a muscular whump. Sharks and silver jacks flash by. Anemone arms flutter and tiny fish and shrimp seem to dance a jig as they guard their nooks. Anything that can't glom on to something rigid is tugged and tossed by each ocean swell.