The ocean helps people. It gives us fish to eat. It gives us sea salt. It gives us oil.
It gives us a way to travel from one place to another. Tiny ocean plants give off the oxygen that we breathe.
But people do not always treat the ocean well. Some dump garbage into it. Others take too many fish. They don’t leave enough fish for other fish to eat. The ocean can be dangerous to people, too. There are shipwrecks all over the globe.
