The Nature Conservancy. Protecting nature. Preserving life.™

Oceans cover about 70 percent of the Earth’s surface, but how much do you really know about them? Test your knowledge below

1. How many oceans are there on Earth?

   1

   1 | Incorrect

   2

   2 | Incorrect

   3

   3 | Incorrect

   4

   4 | Correct

   You got it! Although the oceans are all connected, they are broken up into four: the Pacific, the Indian, the Atlantic and the Arctic.

2. Which ocean is the largest?

   Pacific

   Pacific | Correct

   That’s right! The Pacific Ocean makes up almost half of all the oceans; it is almost as big as the other three oceans combined.

   Indian

   Indian | Incorrect

   Atlantic

   Atlantic | Incorrect

   Arctic

   Arctic | Incorrect

3. What percentage of Earth’s water is found in the oceans?

   73

   73 | Incorrect

   86

   86 | Incorrect

   90

   90 | Incorrect

   96

   96 | Correct

   Correct! Hard to believe, right? That doesn’t leave much for us! Try some of these ideas to help conserve water.

4. But nobody goes to the beach just to play in the water. I want to build a sand castle! When you visit the beach, what kinds of animals might you see?

   Birds

   Birds | Incorrect

   Crabs

   Crabs | Incorrect

   Turtles

   Turtles | Incorrect

   All of the above

   All of the above | Correct

   Of course! Find out how to tell if a beach is healthy…and one clue: a healthy beach is home to loads of cool plants and animals!

5. When you do jump into the water, you will be joining all kinds of animals, from tiny plankton all the way up to fish the size of a bus. What is the world’s largest fish?

   Whale Sharks

   Whale Sharks | Correct

   Yep! But don’t get too excited; you probably won’t run into one. Whale sharks are very hard to find! Learn more about these gentle giants.

   Great White Shark

   Great White Shark | Incorrect

   Seahorse

   Seahorse | Incorrect

   Barracuda

   Barracuda | Incorrect