Coral Reefs. Slide–2 Understanding Coral What is coral... Here you see the jelly-like polyps Corals eat at night Tentacles around mouth capture.
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Coral ReefsCoral Reefs
Slide–2Slide–2
Understanding CoralUnderstanding Coral What is coral. . .
Here you see the jelly-like polyps
• Corals eat at night
Tentacles around mouth capture plankton
What is coral. . .
Here you see the jelly-like polyps
• Corals eat at night
Tentacles around mouth capture plankton
Slide–3Slide–3
Understanding CoralUnderstanding Coral How do coral reefs form?
Reefs are the oldest, most productive, diverse ecosystems in the sea Modern reefs less than 18,000 years old
* Reefs are built by corals
How do coral reefs form?
Reefs are the oldest, most productive, diverse ecosystems in the sea Modern reefs less than 18,000 years old
* Reefs are built by corals
Slide–4Slide–4
Importance of Coral ReefsImportance of Coral Reefs Why are coral reefs important?
Coral reefs are: Less than 1% of the
sea bottom Nursery grounds to
25% of marine species Home to nearly 33% of
all fish species
Why are coral reefs important?
Coral reefs are: Less than 1% of the
sea bottom Nursery grounds to
25% of marine species Home to nearly 33% of
all fish species
Slide–5Slide–5
Importance of Coral ReefsImportance of Coral Reefs What benefits do coral reefs provide to
islands, coastal areas and tourism?
Act as barriers for 1/6 of world’s coastlines
Protects islands
Each square metre/yard guards $47,000 (US) in property value
What benefits do coral reefs provide to islands, coastal areas and tourism?
Act as barriers for 1/6 of world’s coastlines
Protects islands
Each square metre/yard guards $47,000 (US) in property value
Slide–6Slide–6
Importance of Coral ReefsImportance of Coral Reefs Did you know corals are used in
medical research?
- Produce biomedical compounds
- Used for bone replacement
- More to bediscovered
Did you know corals are used in medical research?
- Produce biomedical compounds
- Used for bone replacement
- More to bediscovered
Slide–7Slide–7
Coral Reefs in DangerCoral Reefs in Danger What is the worldwide status of coral
reefs and estimated loss?
1992: 10% degraded beyond recovery
2000: 25% are dead Most reefs are in
jeopardy within 30 - 50 years
According to the World Resource Institute, 58% of remaining reefs are at risk of destruction
What is the worldwide status of coral reefs and estimated loss?
1992: 10% degraded beyond recovery
2000: 25% are dead Most reefs are in
jeopardy within 30 - 50 years
According to the World Resource Institute, 58% of remaining reefs are at risk of destruction
Slide–8Slide–8
Coral Reefs in DangerCoral Reefs in Danger What land-based activities are
dangerous to coral reefs? Poor land use that
causes erosion
Agriculture and sewage discharge
Nonpoint source pollution carrying dissolved substances
What land-based activities are dangerous to coral reefs? Poor land use that
causes erosion
Agriculture and sewage discharge
Nonpoint source pollution carrying dissolved substances
Slide–9Slide–9
Coral Reefs in DangerCoral Reefs in Danger Dangerous land-based activities . . .
Coastal development and habitat destruction
Tourism that damages coastal habitatsand dumps wastes
Dangerous land-based activities . . . Coastal development and
habitat destruction
Tourism that damages coastal habitatsand dumps wastes
Slide–10Slide–10
Coral Reefs in DangerCoral Reefs in Danger What ocean-based activities are
dangerous to coral reefs?
Overfishing
Collision and anchor damage
Coral collecting
What ocean-based activities are dangerous to coral reefs?
Overfishing
Collision and anchor damage
Coral collecting
Slide–11Slide–11
Protect the Living ReefProtect the Living Reef Promote conservation . . .
Do not overfish
Further your education
Volunteer to help keeping the island
clean
Promote conservation . . .
Do not overfish
Further your education
Volunteer to help keeping the island
clean
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