Coral Reefs - PowerPoint PPT Presentation

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Title:

Coral Reefs

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Coral reefs formed more than 500 million years ago. They cover less than ... reef building or hard coral. Most coral reefs are located between 200N and 200S of ... – PowerPoint PPT presentation

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Tags: coral | reef | reefs

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Title: Coral Reefs


1
Coral Reefs
  • Rainforests of the Sea

2
  • Coral reefs formed more than 500 million years
    ago
  • They cover less than 0.2 of the ocean floor
  • They contain 25 of the oceans species

3
  • Coral is an invertebrate (without a backbone)
    animal
  • There are over 2500 species of coral, of which
    1000 are
  • reef building or hard coral

4
Most coral reefs are located between 200N and
200S of the equator Coral thrive in shallow,
clear sunlit saltwater between 790 and 810
F They are found in water depths of less than
30 feet
5
3 Types of Reefs
  • Fringing Reefs
  • Barrier Reefs
  • Atolls

6
Fringing Reefs
  • They grow directly from the shoreline of the
    continent

7
Barrier Reefs
  • They are found further out from the land,
    separated from the shore by a stretch of
    protected water-a lagoon

8
Atolls
  • These are offshore ring-like formations that
    surround a shallow, central lagoon
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