Test your knowledge of the world's oceans with our interactive oceans quiz! Can you answer all of the following questions and get a perfect score?

Click on the links that you think best answer each quiz question below. Good luck!

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1. Oceans span 70 percent of the Earth’s surface. What percent of oceans is protected?
   
   
   1. 1%
   2. 5%
   3. 7%
   4. 20%
2. How much do oceans provide us annually in ecological goods and services?
   
   
   1. $150 billion
   2. $400 billion
   3. $3.7 trillion
   4. $20 trillion
3. How many people depend on fish and seafood as their primary source of protein?
   
   
   1. 300 million
   2. 700 million
   3. One billion
   4. Sixteen billion
4. Which of the following is a major threat to oceans?
   
   
   1. Coastal development
   2. Overfishing
   3. Climate change
   4. All of the above
5. True or False: More than one-half of the world’s population lives within 60 miles of a coast.
   
   
   1. True
   2. False
6. Coral reefs have been used in the treatment of which disease?
   
   
   1. HIV
   2. Cancer
   3. Cardiovascular disease
   4. All of the above
7. Which of the following is not an impact of climate change on the world’s oceans?
   
   
   1. Higher water temperatures
   2. Altered tidal patterns
   3. Rising sea levels
   4. Escalating ocean acidity
8. What do barrier beaches, coral reefs, mangroves and wetlands help protect communities from?
   
   
   1. Beached whales
   2. Flying fish
   3. Storm damage
   4. Angry crabs
9. What's the name of the colorful algae that dies back from coral reefs when ocean temperatures warm — a process known as "coral reef bleaching"?
   
   
   1. Zoomania
   2. Lollapalooza
   3. Zooxanthellae
   4. Super plankton
10. True or False: Oceans and coasts are in trouble, but there is nothing we can do to conserve them.
    
    
    1. True
    2. False

Oceans Quiz Scoring Guide

• 0-2 correct: Ocean novice – Start over at our oceans habitat.
• 3-5 correct: Ocean apprentice – Check out this coral reef video to brush up your knowledge
• 6-8 correct: Ocean ranger – Very good!  Send a free ocean e-card to friends and family to show your support of the world's oceans.
• 9-10 correct: Ocean conservationist – You're a real pro! Test your knowledge of the Earth's other habitats.