Coral Reefs Trivia Questions
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Marine ecosystems built by coral polyps. Play Coral Reefs trivia solo to sharpen your knowledge, or challenge a friend head-to-head in Trivia Tango — every question comes with an explanation so you learn as you play.
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Sample Coral Reefs Questions
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These tiny marine animals with tentacles are the primary builders of coral reefs, secreting calcium carbonate to form hard skeletons.
- Sea anemones
- Jellyfish
- Coral polyps
- Starfish
This colorful single-celled algae lives inside coral tissue, providing up to 90% of the coral's energy through photosynthesis.
- Kelp
- Zooxanthellae
- Seaweed
- Phytoplankton
This phenomenon occurs when stressed corals expel their symbiotic algae, causing them to turn white and potentially die.
- Coral bleaching
- Coral decay
- Reef erosion
- Marine whitening
Located off the coast of Queensland, Australia, this is the world's largest coral reef system, visible from space.
- Red Sea Reef
- Belize Barrier Reef
- Florida Keys Reef
- Great Barrier Reef
This type of reef forms a ring-shaped structure surrounding a central lagoon, often where a volcanic island has subsided.
- Barrier reef
- Fringing reef
- Atoll
- Patch reef
Coral reefs are often called the rainforests of the sea because they support this impressive percentage of all marine species despite covering less than 1% of the ocean floor.
- 10%
- 25%
- 50%
- 75%
This brightly colored fish with distinctive stripes famously lives among the stinging tentacles of sea anemones on coral reefs.
- Clownfish
- Angelfish
- Butterflyfish
- Damselfish
This term describes the mutually beneficial relationship between coral polyps and the algae living inside them.
- Parasitism
- Commensalism
- Predation
- Symbiosis
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