The Great Barrier Reef is one of the most remarkable ecosystems on Earth. This quiz explores the history, biology, and environment of this massive coral structure off Australia’s coast.
You will see questions about marine life, coral bleaching, and the Indigenous stories linked to the reef. Some questions focus on geography, while others look at historic shipwreck sites.
When you finish, try exploring other travel destinations, studying gorgeous islands and beaches, or learning about spectacular natural wonders.
The Great Barrier Reef is located off the coast of which ocean?
Indian Ocean
Indian Ocean
Pacific Ocean
Pacific Ocean
Atlantic Ocean
Atlantic Ocean
Arctic Ocean
Arctic Ocean
Which country is the Great Barrier Reef located off the coast of?
New Zealand
New Zealand
Australia
Australia
Fiji
Fiji
Indonesia
Indonesia
The Great Barrier Reef is primarily built by what organisms?
Sea anemones
Sea anemones
Marine algae
Marine algae
Sponges
Sponges
Coral polyps
Coral polyps
Which large, herbivorous marine mammal is native to the Great Barrier Reef?
Bottlenose dolphins
Bottlenose dolphins
Dugongs
Dugongs
Sea otters
Sea otters
Manatees
Manatees
The Great Barrier Reef runs parallel to the coast of which Australian state?
New South Wales
New South Wales
Queensland
Queensland
Victoria
Victoria
Western Australia
Western Australia
The Great Barrier Reef is famously large enough to be seen from which high-altitude location?
International Space Station
International Space Station
The Moon
The Moon
Mars
Mars
The Sun
The Sun
Approximately how long is the Great Barrier Reef system?
2,300 km
2,300 km
1,300 km
1,300 km
4,300 km
4,300 km
3,300 km
3,300 km
What is the primary cause of coral bleaching in the Great Barrier Reef?
Increased rainfall
Increased rainfall
Stronger tides
Stronger tides
Rising ocean temperatures
Rising ocean temperatures
Increased fish migration
Increased fish migration
When a coral bleaches, it loses its vibrant color because it expels which organism?
Parasitic flatworms
Parasitic flatworms
Cyanobacteria
Cyanobacteria
Symbiotic fungi
Symbiotic fungi
Symbiotic algae called zooxanthellae
Symbiotic algae called zooxanthellae
Which island group is a popular diving and tourism hub within the Great Barrier Reef?
Tasmanian Islands
Tasmanian Islands
Lord Howe Island
Lord Howe Island
Whitsunday Islands
Whitsunday Islands
Kangaroo Island
Kangaroo Island
What term is commonly used to describe the Aboriginal and Torres Strait Islander peoples’ connection to the reef?
Modern marine biologists
Modern marine biologists
Traditional Owners
Traditional Owners
European settlers
European settlers
Local commercial fishermen
Local commercial fishermen
Many Aboriginal cultures in the tropical north are traditionally identified as what type of people due to their reef connection?
Desert people
Desert people
River people
River people
Mountain people
Mountain people
Saltwater people
Saltwater people
Approximately how many species of fish inhabit the Great Barrier Reef?
1,000
1,000
2,500
2,500
1,500
1,500
2,000
2,000
Which statement correctly distinguishes hard corals from soft corals?
Soft corals are plants, while hard corals are animals
Soft corals are plants, while hard corals are animals
Hard corals are the main reef-building organisms
Hard corals are the main reef-building organisms
Hard corals only grow in deep, cold water
Hard corals only grow in deep, cold water
Soft corals do not produce any tentacles
Soft corals do not produce any tentacles
Which species is known to cause significant damage to the reef by eating coral polyps?
Blue-ringed octopus
Blue-ringed octopus
Box jellyfish
Box jellyfish
Crown-of-thorns starfish
Crown-of-thorns starfish
Great white shark
Great white shark
Which tropical city is often called the gateway to the Great Barrier Reef?
Hobart
Hobart
Darwin
Darwin
Sydney
Sydney
Cairns
Cairns
The Great Barrier Reef was designated as what kind of global status landmark in 1981?
International naval base
International naval base
Common wealth park
Common wealth park
Deep sea sanctuary
Deep sea sanctuary
UNESCO World Heritage site
UNESCO World Heritage site
The creation of the reef is featured in which traditional stories of the Indigenous peoples?
Colonial ship logs
Colonial ship logs
Maritime treaties
Maritime treaties
Aboriginal Dreamtime stories
Aboriginal Dreamtime stories
19th-century maps
19th-century maps
What process, caused by increased carbon dioxide absorption, limits the ability of corals to build their skeletons?
Ocean acidification
Ocean acidification
Increased solar flares
Increased solar flares
Reduction in salinity
Reduction in salinity
Increased volcanic activity
Increased volcanic activity
Which famous historic shipwreck sits at the bottom of the Great Barrier Reef and is a top destination for advanced divers?
HMS Bounty
HMS Bounty
SS Yongala
SS Yongala
Titanic replica
Titanic replica
USS Arizona
USS Arizona
It is estimated that the modern framework of the Great Barrier Reef began to grow approximately how many years ago?
14,000 years
14,000 years
10,000 years
10,000 years
6,000 years
6,000 years
2,000 years
2,000 years
Which site in the northern part of the Great Barrier Reef is famous for friendly Potato Cod?
Sapphire point
Sapphire point
Blue lagoon
Blue lagoon
The abyss
The abyss
Cod Hole
Cod Hole
You can do better
Not bad
Great!
If you enjoyed this, check out more about global landmarks, discover weird travel details, or read about historical locations.
