Seas and oceans.
Water covers about 68% of the earth's surface .
Oceans .
The largest body of water called oceans .
The World Ocean is divided into :
Pacific Ocean
Atlantic Ocean
Indian Ocean;
Atlantic Ocean.
The boundaries between the oceans are conditional.
Pacific Ocean.
The largest ocean.
For a long time it was called the Great Ocean .
In fact, the ocean is often restless and formidable .
Atlantic Ocean.
The second largest ocean.
It stretches along the north-south meridians .
Indian Ocean.
The third largest ocean.
It is located in the far southern latitudes .
Arctic Ocean.
The smallest ocean.
Most of it is covered with ice .
Seas.
Sea is a part of the ocean , separated from it by land , submarine ridges or hills .