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Great Barrier Reef PowerPoint Presentation
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Great Barrier Reef

Great Barrier Reef

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Great Barrier Reef

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  1. Great Barrier Reef

  2. 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

  3. Diversity of Life In 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

  4. Coral • Coral reefs are found in shallow water, ranging to depths of 60m • Water temperatures range from 64 – 91F • 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

  5. Dangers on the Reef The reef has many species of marine life that can be potentially fatal to humans! www.barrierreefaustralia.com

  6. 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

  7. 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

  8. 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

  9. Cone Shells • Look very pretty • Several types are known to be very dangerous to humans

  10. Lion Fish • Venomous fin spines that can produce painful puncture wounds

  11. 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. 

  12. Sea Snakes • Approx 15 species can be found on the reef • Normally not aggressive • No reported deaths!! • ALL OF THEM PRODUCE LETHAL VENOM

  13. Stingrays • Stingrays’ tail can inflict serious lacerations & deep wounds

  14. Reef Fleet Terminal

  15. Ocean Spirit Cruise Ocean Spirit

  16. Ocean Spirit Cruise • Scuba Dive • Snorkel • Lunch Ocean Spirit