What can people learn about life on Earth by studying the sea?
Oceans cover about 70% of Earth’s surface. People use different kinds of natural resources from the oceans. Many people eat ocean organisms such as fish, shrimp, crabs, lobsters, squid, and seaweed. Resources such as oil and natural gas are extracted from beneath the ocean floor. The oceans have other resources, such as gold, that we may be able to obtain in the future. Would you like to explore the ocean?