Ocean

The Earth's oceans are the largest seas or collections of seas, separated by continents. Three quarters of earth's surface are covered by water. The oceans include:

• Arctic Ocean
• Atlantic Ocean
• Indian Ocean
• Pacific Ocean
• Southern Ocean

The oceans are filled with [salt water]?--which is called brine?--through which swim many fishes, [marine mammal]?s, cephalopod?s such as the octopus?, and many other forms of life.

One of the most dramatic forms of weather occur on the oceans: hurricanes, which are known as typhoons? in the Pacific Ocean. Ocean currents greatly affect the earth's weather--for example, [El Nino]? and [La Nina]? in the southern Pacific Ocean greatly affect the weather of The Americas.

The study of the earth's oceans is called oceanography?.