Great Barrier Reef

Answer this question in the quiz to reveal the explanation.

Answer this question in the quiz to reveal the explanation.

Answer this question in the quiz to reveal the explanation.

Answer this question in the quiz to reveal the explanation.

Answer this question in the quiz to reveal the explanation.

Answer this question in the quiz to reveal the explanation.

Answer this question in the quiz to reveal the explanation.

Answer this question in the quiz to reveal the explanation.

Answer this question in the quiz to reveal the explanation.

Answer this question in the quiz to reveal the explanation.

Question 1

What tiny marine invertebrate animals build the calcium carbonate stony skeleton of the coral reef?

Question 2

Off the coast of which Australian state is the Great Barrier Reef located?

Question 3

Can the Great Barrier Reef be seen from outer space by orbiting astronauts without a telescope?

Question 4

In which calendar year was the Great Barrier Reef designated as a UNESCO World Heritage Site?

Question 5

What symbiotic photosynthetic microscopic algae live inside coral tissues and give corals their vibrant colors?

Question 6

What ecological crisis occurs when elevated ocean temperatures force corals to expel their symbiotic algae, turning them stark white?

Question 7

What synchronous reproductive phenomenon occurs across the Great Barrier Reef once a year following a late spring full moon?

Question 8

What venomous, coral-eating predatory starfish undergoes periodic population outbreaks that devastate reef cover?

Question 9

Which English explorer ran his ship HMS Endeavour aground on a Great Barrier Reef reef in June 1770?

Question 10

What unique, slow-moving marine mammal herbivore related to the manatee relies on the reef's vast seagrass meadows?

What tiny marine invertebrate animals build the calcium carbonate stony skeleton of the coral reef?