whats the difference b/w sea and ocean ?

Answer 1

Any water body which has more than 3% area of hydrosphere is called ocean while other protected ,closed or partially enclosed water bodies have different nomenclature

Answer 2

Oceans (from Ὠκεανός Okeanos in Greek) are saline waters that cover almost three quarters (71%) of the surface of the Earth. The area of the oceans is 361 million sq. km., and nearly half of the world's marine waters are over 3,000 meters (9,800 ft) deep.

Though somewhat arbitrarily divided into several "separate" oceans, these oceans are in fact one global, interconnected body of salt water, often called the World Ocean. The major divisions are defined in part by the continents and a variety of archipelagos, and are labeled the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, the Southern Ocean, and the Arctic Ocean. Smaller regions of the oceans are called seas, gulfs, straits and other names.

There are also some smaller bodies of salt water that are not interconnected with the World Ocean (e.g., the Caspian Sea, the Great Salt Lake). These are not considered to be oceans or parts of oceans, though some of them have been given the name, sea.

Geologically, an ocean is an area of oceanic crust covered by water. Oceanic crust is the thin layer of solidified volcanic basalt that covers the Earth's mantle where there are no continents. From this point of view, there are three "oceans" today: the World Ocean, and the Black and Caspian Seas that were formed by the collision of Cimmeria with Laurasia. The Mediterranean Sea is very nearly its own "ocean", being connected to the World Ocean through the Strait of Gibraltar, and indeed several times over the last few million years movement of the African Continent has closed the strait off entirely, making the Mediterranean a fourth "ocean". (The Black Sea is connected to the Mediterranean through the Bosporus, but this is in effect a natural canal cut through continental rock some 7,000 years ago, rather than a piece of oceanic sea floor like the Strait of Gibraltar.)

and

A sea is a large expanse of saline water connected with an ocean, or a large, usually saline, lake that lacks a natural outlet such as the Caspian Sea and the Dead Sea. The term is used colloquially as synonymous with ocean, as in "the tropical sea" or "down to the sea shore", or even "sea water" to refer to water of the ocean. Large lakes, such as the Great Lakes, are sometimes referred to as inland seas. Many seas are marginal seas, in which currents are caused by ocean winds; others are mediterranean seas, in which currents are caused by differences in salinity and temperature.

The International Hydrographic Organization (IHO) is the world authority when it comes to defining seas. The current defining document is the Special publication S-23, Limits of Oceans and Seas, 3rd edition, 1953. The second edition dated back to 1937, and the first to 1928. A fourth edition draft was published in 1986 but so far several naming disputes (such as the one over the Sea of Japan) have prevented its ratification.

You could get more information from the 2 links below...

Answer 3

alpharomper has the correct answer. "Ocean" is used for largest bodies of seawater, while "Sea" is used for the smaller ones, such as "Celebes Sea", or "Black Sea". We never say, "Pacific Sea", and who's ever heard of "Carribean Ocean"?

Thumbs down to the idiots that thumbed down his correct response.

Answer 4

sea is a geographically smaller body of water than an ocean. an ocean may consist of many seas made up together...

Answer 5

one is SEA the other is OCEAN

Answer 6

SALT CONTENT.