The Great Barrier Reef is a site of remarkable variety and beauty on the north-east coast of Australia spread over 2300 kilometers.

It contains the world’s largest collection of coral reefs, with 400 types of coral, 1,500 species of fish and 4,000 types of mollusc.


Amazing Great Barrier Reef view from Helicopter


The breathtaking array of marine creatures includes 600 types of soft and hard corals, more than 100 species of jellyfish, 3000 varieties of molluscs, 500 species of worms, 1625 types of fish, 133 varieties of sharks and rays, and more than 30 species of whales and dolphins.

The Great Barrier Reef is marked as one of the world’s great natural wonders and It is the largest reef in the world.

Outer reef scuba diving and island day trips are some of the more common pastimes on the reef along with scenic flights and rain forest tours to Kuranda and the Daintree rain forest.


The Great Barrier Reef Marine Park:

  • Covers 344,400 km2 in area
  • Includes the world’s largest coral reef ecosystem
  • Includes some 3000 coral reefs, 600 continental islands, 300 coral cays and about 150 inshore mangrove islands
  • Extends south from the northern tip of Queensland in north-eastern Australia to just north of Bundaberg
  • Width is about between 60 and 250 kilometers
  • It has an average depth of 35 meters in its inshore waters, while on outer reefs, continental slopes extend down to depths of more than 2000 meters

For Our Assumption we can take the area about 700 million foot ball ground size, Area about 344,400 square km.

It supports a wide diversity of life and was selected as a World Heritage Site in 1981.



Reefs can increase in diameter by 1 to 3 cm per year, and grow vertically anywhere from 1 to 25 cm per year; but, they grow only above a depth of 150 meters due to their need for sunlight, and cannot grow above sea level.

The Great Barrier Reef World Heritage Area has been divided into 70 bio regions, of which 30 are reef bio regions.




Fishes and species:

The Great Barrier Reef supports a diversity of life, including many vulnerable or endangered species, some of which may be endemic to the reef system.

Nearly 30 types of species whales, dolphins, and porpoises have been recorded in the Great Barrier Reef.




1,500 fish species live on the reef, including the clown fish, red bass, red-throat emperor, and several species of snapper and coral trout.

50 types of species mass spawn, while eighty-four other species spawn elsewhere in their range.




70 species of sea snake live on the Great Barrier Reef in warm waters up to 50 meters.

Saltwater crocodiles live in mangrove and salt marshes on the coast near the reef.

Around 125 species of shark, stingray, skates or chimaera live on the reef.

5,000 species of mollusc have been recorded on the reef.

Forty-nine species of pipe fish and nine species of seahorse have been recorded.

Seven species of frog inhabit the islands.

215 species of birds (including 22 species of seabirds and 32 species of shorebirds) visit the reef or nest or roost on the islands, including the white-bellied sea eagle and roseate tern.




330 species of ascidians on the reef system with the diameter of 1–10 cm.

300-500 species of bryozoans live on the reef.

Five hundred species of marine algae or seaweed live on the reef.

The reef is a very popular destination for tourists, especially in the Whitsunday Islands and Cairns regions, by tourism the country is getting about 3.5 billion dollars per year.


Top Tourist Spots:

  • Scuba Diving
  • Airlie BeachGreat Reef Tourist Place
  • Whitsundays sailing
  • Queensland Diving
  • Magnetic Island.
  • The Daintree Rainforest.
  • Whitsunday islands
  • Mission Beach
  • The Thorsborne Trail
  • North Queensland’s winter sun


The Great Barrier Reef Interesting Facts :

The Great Barrier Reef can be seen even from outer space.

GreatBarrierReef from outer space

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