Around 71 percent of the Earth’s surface is covered by oceans. Many different and interesting features are found in and around them, and a huge variety of animals and plants have adapted to life in this watery world. Humans depend on these teeming waters for comfort and survival, but global warming and overfishing threaten to leave the ocean agitated and empty.
The oceans hold about 320 million cubic miles (1.35 billion cubic kilometers) of water, which is roughly 97 percent of Earth’s water supply. The water is about 3.5 percent salts and contains traces of all chemical elements found on Earth. The oceans absorb the sun’s heat, transferring it to the atmosphere and distributing it around the world via the ever-moving ocean currents. This drives global weather patterns and acts as a heater in the winter and an air conditioner in the summer.
Picture Credit : Google