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Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
Coral Reefs
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Coral Reefs


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Coral Reefs contribute a great amount of biodiversity to our seas down under.

Coral Reefs contribute a great amount of biodiversity to our seas down under.

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  • 1. Coral Reefs! 3/25/10 By:RobAn Williams
  • 2. No, not Christopher Reeve! Not to be confused with Chris Reeve…
  • 3. Purpose
    • Coral reefs contain 25% of all ocean fish
    • Most destruction to coral reefs is manmade (some is caused by hurricanes and storms.)
      • More than a quarter of the earth’s coral reefs have been destroyed by humans.
  • 4. Organization
    • What are coral reefs
    • Organisms in reefs
    • Types of coral reefs
    • Coral reef biodiversity
    • Threats to coral reefs
    • Great Barrier Reef
    • Protection and Restoration
  • 5. What are coral Reefs?!
    • Coral is a stony substance that is made of the skeletons of certain kinds of tiny sea animals called polyps.
    • Polyps produce limestone at their base, which makes coral hollow and acts as a hiding place when predators come.
    • Vary in shape, size and color.
    • Need warm water, sunlight, and clear, shallow water to survive.
  • 6. Organisms in Reefs
    • Sponges, sea slugs, crustaceans, marine snails, sea stars, and fish.
  • 7. Three Types of Coral Reefs…
    • Fringing Reefs : Border shorelines of continents and islands in tropical seas.
    • Barrier Reefs : Form when land masses sink, and fringing reefs separate from shorelines.
    • Atoll Reefs : Surround a central lagoon.
  • 8. Coral Reef Biodiversity
    • Food source for coastal communities.
    • Sources of beach sand.
    • 1 million species of marine life make up its ecosystem.
  • 9. Threats
    • Overfishing
  • 10. Another Threat
    • Pollution
      • Enters through oil spills, acid rain, and hazardous waste, and exhaust from boats.
      • Kills reefs from poisons and heavy metals.
      • Enters the coral through polyps and kills them.
  • 11. … MORE THREATS!
    • Global Warming
      • Heat created by global warming evaporates water leaving coral reefs above the water’s surface.
      • Once coral reefs are above water they cannot breathe, and die.
    • Coral Bleaching
    • Ocean Acidification
    • Coral Mining
    • Threatened Species
      • Over 200 species (33%) are endangered .
      • 10 years ago only 2% were endangered.
      • Warmer sea temperatures lead to sudden sicknesses.
  • 13. Great Barrier Reef
    • Largest coral reef in the world.
    • Made up of 3,000 coral reefs and 900 islands (1616 miles).
    • Off the coast of Queensland, Australia.
    • Home of many species of birds, whales, fish, sea turtles, and stingrays.
    • Large tourist area for scuba divers.
    • Native home to the Black Marlin.
  • 14. Conclusion
    • Little ways to make a difference
      • Conserve water
      • Reduce pollution
      • Use organic fertilizers
      • Practice save diving
  • 15. MuLtIpLe ChOiCe QuEsTiOn
    • Which type of coral reef surrounds a central lagoon?
    • A) Fringing reef
    • B) Barrier reef
    • C) Atoll reef
  • 16. C) Atoll reef
  • 17. References
    • Walsh, Bryan. July 11, 2008.,8599,1821971,00.html
    • Lad, Kashmira. July 1, 2008.
    • The Nature Conservancy.
    • Protecting the Home We Live In. 2002.
    • United States Environmental Protection Agency.
    • Sea World/Busch Gardens. 2002.
    • Picture References
    • Britannica Student Encyclopedia.
    • NOAA. March 25, 2008.
    • EcoAsia.
    • Grinning Planet. September 14, 2008.
    • Hong Kong Environmental Protection Department.
    • InstaBlogs. November 28, 2007.
    • Pixdaus.
    • Kenya Travel Guide. 2006.