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HOST:  Suraj SPEAKER:  Preet and Narinder CHANAKYA HOUSE  Class 11th

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PRACTISE TO CONSERVE AND SUSTANIABLY USE THE OCEANS, SEAS AND MARINE RESOURCES FOR CORAL REEFS

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A coral reef is an underwater ecosystem characterized by the reef-building corals.​ The reefs are formed of colonies of coral polyps held together by the calcium carbonate.​

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It protects coastline from the damaging effects of wave action and tropical storms .  It provide habitats and shelter for many marine organisms . It is a source of carbon, nitrogen and  Other essential material for marine food chain. It also helps in formation of modern medicine s

WHY IS
•t. • . -e.THE CORAL REEF
IMPORTANT?

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Scientists develop important drugs from coral reef organisms as treatments for cancer, arthritis, and viruses.

Healthy coral reefs contribute to fishing and tourism, providing millions of jobs and contributing to economies all over the world.

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Role of coral reefs in reducing climatical change

Coral reefs generate half of Earth's oxygen . Corals rely upon converting carbonates dissolved in seawater into a skeleton by a process known as  calcification . As atmospheric CO2 increases, seawater acidity increases and calcification becomes more difficult.

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Corals are Amazing!
"After weeks of svvimming in the wide, empty ocean, I see
a glimmer ahead - a coral reef! I think of food, shelter, home."
Coral is Alive!
Reefs are built by coral
polyps. which tiny
animals! Younger polyps
grow on top Of Older
ones and the reef grows
in shape and size.
Parts Of a Coral
VVhen Corals Get Hungry
tentacles to Catch
But to get enough to eat.
they also grow food!
How? called
live inside corals. provide
Shelter. the make
from the sun. These plants also give
corals their beautiful colors.
Some for thought!
poop Sand?
People white sand beaches.
Thcsc beachcs arc madc in part
by animals who eat corals and
then expel or pass their hard
sand.
Who knew? Sand castles are
partly parrotfish poop' Amazing!
Coral Reefs of the&Vorld
near the
1,600 Miles Long
Thc Great Barrier Off thc
Coast Of Australia is SO
astronauts Can See it Space.
Even SO. Coral reefs grow ICSs
than I inch per year. Amazing!
How Old Are Corals?
Thc fossil record sho•.vs that corals vvere alive S(X)
million years ago. Was alive
million ago. Humans and T. did not exist

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Tiny plant-like organisms called zooxanthellae live in the tissues  of coral reefs. These microscopic algae capture sunlight and convert it into energy, just like plants, to provide essential nutrients to the corals In exchange, they have a place to live inside the animal's body.

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ANTHROPOGENIC IMPACT                        ON coral REEF

Pollution, overfishing, collecting live corals for the aquarium market and mining coral for building materials are some of the many ways that people damage reefs all around the world every day. The use of plastic bag has reduce over 40% of coral reefs from the sea or ocean. Excess nutrients from ammonia and nitrate-based fertilizer's and other household products, entering the reef ecosystem.​

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SCIENTIFIC TECHNOLOGY FOR PROTECTION OF CORAL REEFS

UNDERWATER ROBOTS THAT MIMIC OCEAN LIFE  ELECTRICAL BIOROCK STIMULATES CORAL GROWTH 3D MAPPING AND BATHYMETRY TO MONITOR REEFS

GOOD MORNING