ELI5: Explain Like I'm 5

Ocean

The ocean is a huge body of water that covers most of the Earth. It is connected so that all the water mixes together and it never stops moving. It is filled with lots of big and small animals, like whales, turtles, fish, and crabs. It also has lots of plants and rocks. The ocean is important because it provides us with food, oxygen, and other resources. Some people spend time in the ocean for fun and to explore.