What is the difference between sea and an ocean?

Answer 1

Although the terms "ocean" and "sea" are often used interchangeably, a sea is generally considered to be smaller than an ocean. One definition of "ocean" is: a great body of interconnecting salt water that covers 71 percent of the Earth's surface. There are four major oceans—Arctic, Atlantic, Indian, and Pacific. However, some sources do not include the Arctic Ocean, calling it a marginal sea. The term "sea" is often assigned to saltwater areas on the margins of oceans, such as the Mediterranean Sea situated beside the Atlantic Ocean.

Answer 2

Sea

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 Sea of Galilee is a small freshwater lake with a natural outlet, but the term was applied to it anyway. The term is used colloquially as synonymous with ocean, as in the tropical sea or down to the sea shore, or even sea water referring to water of the ocean. Large lakes are sometimes referred to as inland seas, such as the Great Lakes. Many seas are marginal seas.


Ocean
Smaller regions of the oceans are called seas, gulfs, straits and other names.

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.)

Answer 3

An ocean is much larger than a sea, for example, we can look at the Pacific Ocean and the Baltic Sea, the Pacific Ocean is much larger than the Baltic Sea. There are many more examples like this!

Answer 4

There is really no difference except that the sea is smaller than the ocean.

Answer 5

the sea is smaller than an ocean
an ocean is the biggest region of water in the earth

Answer 6

Interesting. my guess is that oceans are larger body's of water. The main source that feeds rivers and estuaries and such. Seas I would gather are smaller inland deposits of water larger than a lake but smaller than an ocean.

Answer 7

A portion of the ocean bordered on one or more 'sides by land is called a sea.

An ocean is the vast unifying body of water.

Answer 8

The Ocean connecting parts of the world or continents. Like Africa - India - Australia. But see don't.

Answer 9

ocean depth is more than sea

Answer 10

3 Letters compared to 5 Letters