The Great Barrier Reef is the largest coral reef system on Earth, visible even from space. This unique ecosystem stretches along the coast of Queensland, Australia, and supports thousands of marine species.
Our quiz covers the biology of corals, the threats facing the reef, and the cultural history of its traditional owners. You will find questions about sea cows, shipwrecks, and conservation milestones.
Once you finish, you can visit other interesting places, explore beautiful islands and beaches, or learn about different natural wonders across the globe.
The Great Barrier Reef is located off the coast of Australia in which ocean?
Atlantic Ocean
Atlantic Ocean
Arctic Ocean
Arctic Ocean
Indian Ocean
Indian Ocean
Pacific Ocean
Pacific Ocean
Which of the following statements about the Great Barrier Reef’s physical scale is true?
It is entirely man-made
It is entirely man-made
It is visible from outer space
It is visible from outer space
It is composed only of sandbars
It is composed only of sandbars
It is located in the Mediterranean Sea
It is located in the Mediterranean Sea
The massive structure of the Great Barrier Reef is primarily built by what type of organism?
Hard coral
Hard coral
Soft coral
Soft coral
Seaweed
Seaweed
Sponges
Sponges
Which Queensland city is widely considered the primary gateway for tourism and diving in the Great Barrier Reef?
Hobart
Hobart
Darwin
Darwin
Cairns
Cairns
Perth
Perth
Who are the Traditional Owners of the sea country that encompasses the Great Barrier Reef?
European settlers
European settlers
Aboriginal and Torres Strait Islander peoples
Aboriginal and Torres Strait Islander peoples
Polynesian explorers
Polynesian explorers
Malay traders
Malay traders
What is the most significant threat to the health of the reef caused by rising ocean temperatures?
Plastic pollution
Plastic pollution
Overfishing
Overfishing
Coastal erosion
Coastal erosion
Coral bleaching
Coral bleaching
Approximately how long is the Great Barrier Reef system?
Approximately 1,300 km
Approximately 1,300 km
Approximately 2,800 km
Approximately 2,800 km
Approximately 2,300 km
Approximately 2,300 km
Approximately 1,800 km
Approximately 1,800 km
Corals derive most of their energy and vibrant colors through what process?
Absorbing minerals from volcanic soil
Absorbing minerals from volcanic soil
Consuming plankton solely at night
Consuming plankton solely at night
Chemosynthesis
Chemosynthesis
Symbiosis with algae called zooxanthellae
Symbiosis with algae called zooxanthellae
Which famous dive site, located off the coast of Townsville, is the remains of a passenger ship that sank in 1911?
Cod Hole
Cod Hole
The Great Blue Hole
The Great Blue Hole
The Yongala Wreck
The Yongala Wreck
Sipadan Island
Sipadan Island
Many Indigenous groups have maintained a connection to the Great Barrier Reef for thousands of years, primarily documented through what form of cultural heritage?
Modern environmental impact assessments
Modern environmental impact assessments
The 1770 Cook expedition journals
The 1770 Cook expedition journals
Early European navigational charts
Early European navigational charts
“The Dreamtime” stories
“The Dreamtime” stories
Which vulnerable marine mammal, often called a “sea cow,” relies on the seagrass beds of the Great Barrier Reef?
Walrus
Walrus
Harp seal
Harp seal
Dugong
Dugong
Bottlenose dolphin
Bottlenose dolphin
Besides warming water, what chemical change in the ocean poses a threat to coral skeletons?
Change in prevailing wind patterns
Change in prevailing wind patterns
Increase in oceanic pH (alkalinization)
Increase in oceanic pH (alkalinization)
Decrease in oceanic pH (acidification)
Decrease in oceanic pH (acidification)
Massive spikes in tidal range
Massive spikes in tidal range
It is estimated that the Great Barrier Reef contains roughly what percentage of the world’s total fish species?
10%
10%
40%
40%
25%
25%
55%
55%
Which island group is a popular diving and sailing destination located in the heart of the Great Barrier Reef?
Tasman Peninsula
Tasman Peninsula
Whitsunday Islands
Whitsunday Islands
Fraser Island
Fraser Island
Kangaroo Island
Kangaroo Island
Which practice is currently being integrated into modern reef management to improve environmental monitoring?
Installing giant underwater air conditioners
Installing giant underwater air conditioners
Dredging the reef to create deeper channels
Dredging the reef to create deeper channels
Replacing corals with synthetic plastic replicas
Replacing corals with synthetic plastic replicas
Aboriginal rangers using traditional ecological knowledge
Aboriginal rangers using traditional ecological knowledge
In which year was the Great Barrier Reef Marine Park established?
1970
1970
1980
1980
1975
1975
1985
1985
Which organism, when occurring in plague proportions, causes significant damage by eating live coral tissue?
Box jellyfish
Box jellyfish
Lionfish
Lionfish
Green sea turtle
Green sea turtle
Crown-of-thorns starfish
Crown-of-thorns starfish
Which description best defines the structural composition of the Great Barrier Reef?
It is a submerged mountain range unconnected to the surface
It is a submerged mountain range unconnected to the surface
It is a single, continuous, unbroken structure
It is a single, continuous, unbroken structure
It is a collection of thousands of individual reefs and islands
It is a collection of thousands of individual reefs and islands
It is primarily a series of isolated atolls
It is primarily a series of isolated atolls
The Great Barrier Reef is a primary breeding ground or migration route for which small baleen whale species?
Bowhead whales
Bowhead whales
Beluga whales
Beluga whales
Blue whales
Blue whales
Minke whales
Minke whales
Six of the world’s seven species of which ancient reptile can be found in the Great Barrier Reef?
Sea turtles
Sea turtles
Saltwater crocodiles
Saltwater crocodiles
Sea snakes
Sea snakes
Marine iguanas
Marine iguanas
Which international body has frequently assessed the health of the Great Barrier Reef since its listing in 1981?
United Nations Environment Programme
United Nations Environment Programme
International Maritime Organization
International Maritime Organization
UNESCO World Heritage Committee
UNESCO World Heritage Committee
World Wide Fund for Nature
World Wide Fund for Nature
How did the Great Barrier Reef primarily form?
Sandstone deposition from ancient river deltas
Sandstone deposition from ancient river deltas
Tectonic uplift of the continental shelf
Tectonic uplift of the continental shelf
Limestone accretion by coral polyps
Limestone accretion by coral polyps
Volcanic basalt accumulation from hotspot activity
Volcanic basalt accumulation from hotspot activity
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