The Great Barrier Reef is the largest reef system in the world that stretches for 2, 600 kilometres (1, 600 miles) over an area of approximately 344, 400 square kilometres (133, 000 sq miles). It is composed of 2900 separate reefs and 900 islands and is located in the Coral Sea in the northeast side of Australia. The Great Barrier reef can be seen from outer space and is the largest living structure of live organisms. Its uniqueness and its beauty has crowned it to be one of the seven natural wonders of the world, and therefore was selected as a national heritage site (1981).
The biggest threat to the Great Barrier Reef is global warming and research shows that if the earth's temperature increases by 2 degrees, it will result in mass bleaching of the reef. (bleaching - when coral loses it's colour pigments) (So go see it soon or else the reef might die from rising tempuratures). I think it is a wonderful place for a holiday with many activities to be accomplished, and I rate it with a 10/10 for its natural and ecological beauty.
10/10 it is a top spot to holiday.