Why Are Oceans Important?
For starters, oceans cover about two-thirds of the Earth's surface and help create the atmosphere in which plants, humans and animals can live. They are the planet's life-support system, consuming carbon dioxide and producing between one-third and one-half of the world's oxygen.
Sencondly, these great bodies of water impact our weather and climate. Finally, as home to thousands of species of fishes and invertebrates, oceans provide an important part of the global food chain. Bothe marine mammals and humans depend heavily on healthy fishes and healthy fishes and healthy oceans for food. Unless the oceans remain healthy, whales, dolphins, other marine mammals - and even people - will not survive.