Ocean Trivia

50 Ocean Trivia Questions and Answers – Everything Trivia

Embark on a journey beneath the waves with this captivating collection of ocean trivia. Whether you’re a marine enthusiast or just curious about the vast blue expanses that cover our planet, these 50 questions will quench your thirst for knowledge. From mysterious marine life to awe-inspiring natural phenomena, dive deep into the world’s oceans without leaving your seat. Ready to test your sea smarts? Let’s make a splash!

Check out our other trivia:

1. What percentage of the Earth’s surface is covered by oceans?

2. Which ocean is the largest?

3. Which ocean is the smallest?

4. What’s the deepest point in the world’s oceans?

5. What percentage of the Earth’s oxygen is produced by the ocean?

6. What is the Earth’s saltiest sea?

7. Which ocean has the Bermuda Triangle?

8. What phenomenon causes the green flash at sunset over the ocean?

9. Which marine animal is the largest mammal?

10. What type of plant is the primary producer in the ocean?

11. What’s the average depth of the world’s oceans?

12. Which ocean is the saltiest?

13. What are underwater mountain ranges called?

14. What phenomenon results in the rise and fall of sea levels daily?

15. Which ocean surrounds the continent of Antarctica?

16. What type of zone in the ocean is from the surface to 200 meters deep?

17. Which ocean zone is completely dark and starts at 1,000 meters?

18. Which ocean animal has eight arms?

19. What are coral reefs primarily made of?

20. What is the largest sea on Earth?

21. Which ocean borders Africa to the east?

22. Which bird is known to fly for years without landing on the ground or water?

23. Which gas is dissolved in seawater and is essential for marine life?

24. What is the main driving force of ocean currents?

25. Which small shrimp-like creature is a primary food source for whales?

26. What is the name of the colorful light display observed in polar regions?

27. Which ocean has the Ring of Fire, known for its earthquakes and volcanoes?

28. What phenomenon causes the largest waves?

29. What type of underwater forest is found in cold, nutrient-rich waters?

30. What marine animal is known for its ink defense mechanism?

31. Which type of turtle exclusively lives in saltwater?

32. What’s the term for the study of ocean and its phenomena?

33. Which ocean is the most studied due to its proximity to the US and Europe?

34. What type of marine ecosystem is primarily found between the highest and lowest tide marks?

35. Which animal is known as the ‘unicorn of the sea’?

36. Which tiny marine organisms form the base of marine food chains?

37. What structure is built by humans to connect two bodies of water?

38. Which oceanic phenomenon is characterized by the warming of the central and eastern tropical Pacific?

39. What marine phenomenon refers to the periodic rise in sea temperature that affects coral reefs?

40. Which sea creature has a hard outer shell and is known to change its shell as it grows?

41. What is the underwater version of a desert due to its low nutrient content?

42. What name is given to the steep descent of the seabed from the continental shelf?

43. Which ocean borders the west coast of North America?

44. Which massive marine animal is known for its tusk?

45. What type of islands are formed from the tops of underwater mountains?

46. What phenomenon causes cold, nutrient-rich water to rise from the deep ocean?

47. What’s the term for a large body of saltwater smaller than an ocean?

48. Which famous shipwreck was discovered at the bottom of the Atlantic in 1985?

49. What underwater creature is known for its sting and often floats with the currents?

50. Which gas, when dissolved in seawater, makes the oceans more acidic?

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