The Great Barrier Reef
Provides A Colorful Spectacle For Visitors
Coral is a valuable habitat on Earth and
should be preserved wherever it is found. The Great Barrier Reef off the
coast of Queensland in Australia is so well established that it can be
seen from outer space. It is the largest coral system in existence and
dates from 25 million years ago. There are 400 species of hard and soft
coral. The 900 islands and 3,000 individual reefs were named as a World
Heritage Site in 1981.
The reef supports many species, including endangered animals such as the
Humpback Whale and Dwarf Minke Whale. Other species include sea turtles,
dugongs, porpoises, giant clams, cone snails and sea snakes. More than
200 species of birds frequent the Great Barrier Reef area, namely the
Roseate Tern and the White Bellied Sea Eagle. There is a great diversity
of fish, including red bass, snapper and clownfish.
Unfortunately, conditions for coral reefs around the world are
deteriorating as pollution and over fishing affect water quality. This
has impacted on the Great Barrier Reef too, which has suffered from
chemical seepage from agricultural activity such as sugar cane
production and cattle rearing. Coral disease is increasing due to the
presence of copper from industry. Global warming is another factor,
causing the sea temperature to rise and resulting in coral bleaching.
The delicately balanced food chain is the victim of over fishing levels.
Shipping activity is causing waste products and oil spills to pollute
the water.
The area is a magnet for tourists and scuba divers and snorkelers are
particularly attracted to the reef. The water is exceptionally clear for
seeing the colorful spectacle. Many divers are able to see Moray Eels,
Lionfish, Manta Rays and Giant Australian Cuttlefish. Stinging jellyfish
are sometime visitors to the reef and should be avoided if possible.
It's very bad form for anyone to touch the coral as this can do damage.
Several companies operate trips for divers to live on board a boat
whilst they explore the reef. These cater for different levels of
experience in diving.
There are tours of the reef in glass-bottomed boats for those who don't
want to get into the water. Dolphins are sometimes spotted on these
trips but sharks and whales are occasional sightings. The sharks that do
frequent the area are likely to be fish eating but people should still
be wary. Visitors appreciate the value of the Great Barrier Reef and the
importance of doing everything possible to protect its future and the
marine life that depends on it.