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Explore intermediate-level trivia on ocean ecosystems and sea creatures.
1. Which deep-sea creature uses a glowing lure to attract prey?
💡 The anglerfish uses a bioluminescent lure on its head to attract prey in the deep, dark ocean.
2. What is the primary cause of coral bleaching?
💡 Coral bleaching occurs primarily when rising ocean temperatures cause coral to expel the algae living in their tissues.
3. What is the name for animals that live on the ocean floor?
💡 Benthic organisms live on, in, or near the ocean floor or seabed.
4. Which marine mammal is known for using rocks as tools to crack open shellfish?
💡 Sea otters are known to use rocks as tools to break open hard-shelled prey like clams and mussels.
5. Which fish is known for its ability to inflate its body as a defense mechanism?
💡 Pufferfish can inflate their bodies by swallowing water or air, making them harder for predators to swallow.
6. What is the largest species of shark?
💡 The whale shark is the largest fish species in the world, but it's a filter feeder and not dangerous to humans.
7. What do we call microscopic marine plants and animals that drift with ocean currents?
💡 Plankton refers to a wide range of tiny drifting organisms, including both plant-like phytoplankton and animal-like zooplankton.
8. What percentage of Earth's oxygen is estimated to be produced by ocean phytoplankton?
💡 Ocean phytoplankton are estimated to produce at least 50% of the Earth's oxygen through photosynthesis.
9. Which sea creature has three hearts?
💡 Octopuses have three hearts — two pump blood to the gills, and one pumps blood to the rest of the body.
10. What is coral made of?
💡 Coral reefs are formed by colonies of tiny living organisms called coral polyps, which secrete calcium carbonate skeletons.
11. Which deep-sea creature uses a glowing lure to attract prey?
💡 The anglerfish uses a bioluminescent lure on its head to attract prey in the deep, dark ocean.
12. What do we call microscopic marine plants and animals that drift with ocean currents?
💡 Plankton refers to a wide range of tiny drifting organisms, including both plant-like phytoplankton and animal-like zooplankton.
13. Which ocean zone is known as the 'sunlight zone' where most marine life exists?
💡 The epipelagic zone, extending to about 200 meters deep, receives sunlight and supports most marine photosynthesis and life.
14. What is the name for animals that live on the ocean floor?
💡 Benthic organisms live on, in, or near the ocean floor or seabed.
15. What is coral made of?
💡 Coral reefs are formed by colonies of tiny living organisms called coral polyps, which secrete calcium carbonate skeletons.