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Great Barrier Reef
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Facts•Larger than the Great Wall of China•Only living thing on Earth visible from space•1,800 miles long•500,000 years old•Approx 3,400 individual reefs that make up the barrier reef
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Diversity of LifeIn the Reef
•2,800 species of fish•400 different types of coral•500 species of sea weed•215 species of bird•15 species of sea snake•6 species of sea turtles
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Coral
•Coral reefs are found in shallow water, ranging to depths of 60m•Water temperatures range from 64 – 91F•Generally occur in large numbers as colonies of individual polyps linked by tissue•Size – individual polyps range from 3-56mm in diameter or height - colony size varies from 75 – 1500mm
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Dangers on the ReefThe reef has many species of marine
life that can be potentially fatal to humans!
www.barrierreefaustralia.com
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Irukandgi Jellyfish• Mostly found in deeper waters of the reef•Small jellyfish approx 2cm diameter bell•Divers & snorkelers are at risk•Initial sting is usually not very painful; however, 30 minutes after a person usually has severe backache or headache & shooting pains in their muscles, chest & abdomen
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Box Jelly Fish
•Possibly one of the most dangerous creatures on the reef•Mainly found around river mouths & muddy shadow waters, they rarely inhabit the reef islands•“Stinger season” is from November to March
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Blue Ringed Octopus
•Size of a golf ball but its poison is powerful enough to kill an adult human in minutes•There is no know antidote•Resides in rock pools & coral•“Glow” effect when provoked or is defensive – most dangerous at this time
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Cone Shells•Look very pretty•Several types are known to be very dangerous to humans
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Lion Fish•Venomous fin spines that can produce painful puncture wounds
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Stone Fish•Can inflict excruciating pain & possible death•Dwell on stony, muddy bottom areas•Visitors walking on the beaches (especially at low tide) should always wear covered shoes with a sturdy sole.
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Sea Snakes•Approx 15 species can be found on the reef•Normally not aggressive•No reported deaths!!•ALL OF THEM PRODUCE LETHAL VENOM
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Stingrays
•Stingrays’ tail can inflict serious lacerations & deep wounds
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Reef Fleet Terminal