Coral Reef Facts Quiz

What are coral reefs made of?

• Seaweed

• Colorful rocks

• Living creatures called coral

• Sand and shells

Where are most coral reefs found?

• In freshwater lakes

• In shallow, clean ocean waters near the Equator

• Near the poles

• In deep ocean waters

Which is the largest reef system on Earth?

• Great Barrier Reef

• Amazon Reef

• Tubbataha Reef

• Miami Terrace Reef

How old are most coral reefs today?

• 20,000-30,000 years old

• 1,000-2,000 years old

• 100-500 years old

• 5,000-10,000 years old

What do algae do for coral?

• Provide food and help coral grow

• Make the water warmer

• Turn coral into rocks

• Scare away predators

What is a major threat to coral reefs?

• Too much sunlight

• Pollution and climate change

• Lack of fish

• Cold water

How can you help save coral reefs?

• Touch the coral when diving

• Conserve water use

• Feed the fish

• Collect coral as souvenirs

What unique feature do coral have similar to trees?

• Growth rings

• Branches

• Roots

• Leaves

Which of these animals can be found in coral reefs?

• Polar bears

• Kangaroos

• Penguins

• Giant clams

Why do some animals camouflage themselves in coral reefs?

• To look pretty

• To blend in with the sand

• To attract tourists

• To stay safe or to hunt