It is the largest ocean of the world extending from the arctic in the north to suouthern iccean in the south.Covering 169.2 million square kilometers it is larger than all of the earth's land area comibned.
It is the seconf largest occean covering 106.4 million square kilometers with a coastime of 111,000 kilometers.It occupies about 20% of the earth's surface.The occean has some of the world's richest fishing resources especially in the water covering the shelves.
INDIAN OCEAN;
It is the third largest ocean 73,556,000 square kilometers or about twenty percent of the water on the earth's surface.The occean's continental shelves are narrow averaging 200 kilometers 120 mi in the width.The average depth of the occean is 3,890 meters 12.760 feet.
It is the fourth largest ocean covering 20,327,000 square kilometers.It has limited areas of shallow water.The antarctic circumpolar current moves perpetually eastward chasing and joining by itself.It is the world's longest ocean current; transporting 130 million cubic meters per second 100 times the flow of the entire world's river.
It is the smallest of the world's five major oceans.Almost completely surrounded by eurasia and north america it is largely covered by sea ice throughout the year.Its temperature and salinity vary seasonally as the ice cover melts and freezes.
The area has a fragile ecosystem which is slow to change and slow to recover from disruptions or damage.The arctic ocean has relatively little plants life except for phytoplankton. Nutrients from rivers and the currents of the atlantic and pacific oceans provide food for the arctic phytoplankton.To study about any active site, location etc on the earth the knowledge and understanding of some basic terms is a part and parcel for the students.So you are advised to go through the following terms and try to make out them .
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