Great Barrier Reef

The Great Barrier Reef of Australia is an extensive complex of islets, shoals and, of course, coral reefs. It is located off of Australia’s northeastern coastline in the Pacific Ocean. The Reef expands over 1,250 miles to the northwest-southeast, at about 10 to 100 miles offshore and is about 135,000 square miles in area. This wonder has been characterized as the biggest structure that living creatures have ever built.

There are actually 2,100 reefs and 800 fringing reefs around the Great Barrier Reef. All of the reefs, however, share a common origin. They have all been formed from the skeletal waste and skeletons of living marine organisms over the course of millions of years. The framework of the reef is formed from tiny creatures’ calcareous remains, which are known as hydro corals and coral polyps. Bryozoans and coralline algae are what hold it all together.

At the Great Barrier Reef, at least 300 different species of hard coral, worms, sponges, anemones, crabs, prawns, crayfish, lobsters, gastropods, and a wide variety of other fish and birds can be found. The crown-of-thorns-starfish is actually the reef’s most destructive animal, with population outbreaks responsible for up to 90% of coral destruction in some reefs.

The Porolithon and Lithothamnion red algae forms most of the characteristic features of the Great Barrier Reef, and Halimeda green algae can be found nearly everywhere. There is not as much plant life on the surface, with only 30 to 40 different species.

Great Barrier Reef


7 Wonders of the Natural World

7 Wonders of the Underwater World

16 Responses to “Great Barrier Reef”

  1. I really like the pic.s

  2. clownfish facts says:

    wow…!!! lots of cool pictures. but the most i love is, clown fish. great work done by the post.

  3. sonya says:

    well i really want to visit the great barriar reef it looks so bright and beautiful that what i would like

  4. sonya says:

    woooooow\

  5. sonya says:

    i reall ylike the flying fish and the dolphinssssss they are so cute

  6. Kiki says:

    That was really kool!! But our Barrier reefs r being destroyed. I wish people wouldn’t liter or drive boats or in barrier reefs. the shark is a white tip

  7. scarlett says:

    i learning about this place i need to know what trees there are in this place

  8. Wow! Amazing. Now I need to get an underwater camera!
    I love photographing animals and seen many good shots, but these are just wow! Just Stunningly Beautiful. Id recommend it to beginner photographers to get the feeling of what a good photo looks like.

    (my favorite one is of the eel. Must have been a hard picture to take!)

  9. Ive shown My Friends some of these pic and they completely agree that they are gorgeous

  10. Stunned says:

    Im stunned at the beauty of these Pics… I agree with Annemarie Voogal. Stunningly Beautiful!

  11. vishnupriya says:

    the pictures are very nice

  12. thse are the most adorable pictures i have ever seen OMG!!!!!!

  13. Oleg says:

    all what have I seen here simply faced the Nature… It is just adorable !

  14. nevh says:

    Amazing!! :)

  15. frederick jantjes says:

    OMG REALLY LOVE THE PICS. I AM DOING A PROJECT ON THE WORLD (GEOGRAPHY ) AS USAUL I WAS DOWN IN THE DUMPS BUT WHEN I SAW THIS PICTURE IT PUT THE MOON IN MY NIGHT SKY

    P,S WILLL BE COMING TO AUSTRALIA SOON BE SUR TO GO DIVING.

    AUSTRALIA YOU ROCK BUT NOT AS MUCH AS SOUTH AFRICA TO SPACIAFIC THE MOTHER CITY CAPE TOWN ROCK ON!!!!!!!!!!!!!!!!

  16. sri sivaani says:

    i love the shark Leonard low .do you know the shark bites its own tail.Australia is amazing!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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