Bing Marine Biology Quiz – Reefs, Fish and Sea Science
The Bing Marine Biology Quiz lets you test your knowledge of reefs, marine ecosystems and ocean organisms, from coral polyps, zooxanthellae and coral bleaching to plankton, kelp forests, clownfish, sea turtles and whales. Coral isn't a plant, and the sea holds many other surprises.
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🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds
Coral
What kind of living thing is a coral?
Coral
Tiny algae called zooxanthellae live inside corals. What do they provide?
Bleaching
What causes coral bleaching?
Plankton
What are phytoplankton?
Kelp
Kelp forests grow best in what kind of water?
Symbiosis
Why can clownfish live among sea anemone tentacles without being stung?
Turtles
Where do female sea turtles come ashore to nest?
Whales
How do baleen whales such as humpbacks feed?
Ocean zones
What is the dark ocean zone below about 1,000 meters called?
Mangroves
What do mangrove forests provide for many young fish?
Your score
0/10
Scroll down to see the explanation for each question.
Explanations: answer key for all 10 questions
- Q1: What kind of living thing is a coral?
Answer: An animal
Corals are colonies of tiny animals called polyps. They are related to jellyfish and sea anemones.
- Q2: Tiny algae called zooxanthellae live inside corals. What do they provide?
Answer: Food made from sunlight
The algae make sugar through photosynthesis and share it with the coral. They also give corals much of their color.
- Q3: What causes coral bleaching?
Answer: Stress, such as warm water, makes corals expel their algae
Without the algae, corals turn white and starve if conditions do not improve. Marine heat waves have caused mass bleaching events.
- Q4: What are phytoplankton?
Answer: Tiny drifting plant-like organisms
Phytoplankton produce a large share of Earth's oxygen. They form the base of most ocean food webs.
- Q5: Kelp forests grow best in what kind of water?
Answer: Cool, nutrient-rich water
Giant kelp can grow up to about half a meter a day. Sea otters protect kelp forests by eating sea urchins.
- Q6: Why can clownfish live among sea anemone tentacles without being stung?
Answer: A layer of mucus protects them
The clownfish gets shelter and the anemone gets food scraps and cleaning. This is a classic example of mutualism.
- Q7: Where do female sea turtles come ashore to nest?
Answer: On sandy beaches
Many females return to the beach where they hatched. Sand temperature decides whether hatchlings are male or female.
- Q8: How do baleen whales such as humpbacks feed?
Answer: By filtering small prey through plates in their mouths
Baleen is made of keratin, like human fingernails. Humpbacks sometimes trap fish with nets of bubbles.
- Q9: What is the dark ocean zone below about 1,000 meters called?
Answer: The midnight zone
No sunlight reaches the midnight zone. Many animals there produce their own light, and food is scarce, so they eat whatever drifts down.
- Q10: What do mangrove forests provide for many young fish?
Answer: Sheltered nursery habitats
Mangrove roots protect young fish from predators. Mangroves also protect coasts from storms by slowing waves before they reach land.
Bing Marine Biology Quiz – Reefs, Fish and Sea Science
Marine biology studies life in the oceans, from microscopic plankton to the largest whales. Ocean ecosystems are connected in complex ways, and many familiar sea creatures turn out to be stranger than they seem.
Coral reefs are a good example. Corals are animals, not plants, built from colonies of tiny polyps. Algae called zooxanthellae live inside them and provide food, but stress such as warm water makes corals expel the algae and turn white in a process called bleaching.
Other ecosystems are just as important. Phytoplankton form the base of ocean food webs and produce much of Earth's oxygen, kelp forests grow in cool, nutrient-rich water and mangrove roots shelter young fish. The deep midnight zone lies below about 1,000 meters.
Partnerships and life cycles add surprises. Clownfish live safely among anemones, baleen whales filter food through plates in their mouths and sea turtles return to sandy beaches to lay their eggs.
Ten questions, three options each and 150 seconds on the clock: that is the challenge of the Bing Marine Biology Quiz. Read every question carefully, because some answers are designed to look right at first glance. The explanation after each answer shows the reasoning, and you can play again to improve your score. Many players find that the second attempt goes much better, because the explanations help the facts stick. Share the quiz with a friend and compare your results.
Play the quiz and see how much sea science you know.
What This Quiz Teaches
- What corals are
- Coral bleaching
- Plankton and food webs
- Kelp forests and mangroves
- Ocean partnerships
- Ocean depth zones
Quick Facts
- Coral reefs cover less than 1 percent of the ocean floor.
- About a quarter of marine species depend on reefs.
- Sea urchins can destroy kelp forests.
- Seagrass meadows store large amounts of carbon.
- Some corals are hundreds of years old.
- Most of the ocean is below 200 meters deep.
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