Earth’s oceans cover more than 70 percent of the planet’s surface, providing us with endless opportunities for recreation; with a great deal of food, energy, and minerals; and with a vast highway for trade between continents. Most importantly, oceans help maintain a healthful environment for Earth by regulating the air temperature and by supplying the moisture for rainfall and other kinds of precipitation. If there were no oceans, life as we know it could not exist on our planet. Scientists are still learning about the seas, using new tools to explore their depths. And we all realize how important it is to conserve oceans. Then click below for activities that highlight the challenge of protecting Earth’s oceans and the living things that reside there.