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REEF

Q1. What is a Reef?
A ridge of rock, coral or sand, at or near the surface of water.
Q2. What is a Coral Reef?
Coral Polyps are tiny living creatures found at the bottom of the ocean. A coral reef is made up of billions of coral polyps and is home to hundreds of different types of corals and thousands of different species of fish. The world's first coral reefs were formed 500 million years ago.
Q3. What is a Fringing Reef?
Reef building corals start building reefs, along the edges of islands. Tropical islands mostly have them. They protect the islands from the onslaught of the sea.
Q4. What is a Barrier Reef?
Islands with coral fringe reefs sometimes start sinking. Then the sea water enter the islands sinking shorelines and separates the coral reef from the rest of the islands. Such a barrier is called the barrier reef.
Q5. Where is the famous "Great Barrier Reef"?
Queensland, Australia. It is about 2000 Kms long. It is the largest.
Q6. Where is the second largest Barrier Reef?
Belize.
Q7. What is Rand?
A familiar name for "Wit Water Rand", a ridge about 75 kms lying south of Johannesburg called the "Gold Reef City", where the world'sgreatest gold mines of the world lies.
Q8. Who discovered the Great Barrier Reef?
Captain James Cook in 1770.
Q9. What is special about the Great Barrier Reef?
It is the single biggest structure made living organisms. 600 islands and 3400 individual reefs make up the Great Barrier Reef. From 1981, it is a World Heritage Site.