The sea is the interconnected system of all the Earth's oceanic waters, including the Atlantic, Pacific, Indian, Southern and Arctic Oceans. [1] However, the word "sea" can also be used for many specific, much smaller bodies of seawater, such as the North Sea or the Red Sea.

The terms "the ocean" or "the sea" used without specification refer to the interconnected body of salt water covering the majority of Earth's surface. [9] [10] It includes the Pacific, Atlantic, Indian, Southern/Antarctic, and Arctic oceans. [20] As a general term, "the ocean" and "the sea" are often interchangeable. [21]

The sea is the interconnected system of all the Earth's oceanic waters, including the Atlantic, Pacific, Indian, Southern and Arctic Oceans. However, the word "sea" can also be used for many specific, much smaller bodies of seawater, such as the North Sea or the Red Sea.There are 78 seas in the world

2023年10月19日 · But there are actually about 50 water formations that can be called a “sea,” and they are quite diverse when it comes to their size, location, and ecosystems. The “seven seas” has been used to describe the world’s great water bodies for a long time.

For example, the Law of the Sea states that all of the World Ocean is "sea", [8] [9] [10] [b] and this is also common usage for "the sea". Any large body of water with "Sea" in the name, including lakes.

Below the ocean’s surface is a mysterious world that accounts for over 95 percent of Earth’s living space—it could hide 20 Washington Monuments stacked on top of each other. But the deep sea remains largely unexplored. As you dive down through this vast living space you notice that light starts fading rapidly.

2023年10月19日 · Seas are large bodies of salty water. The Dead Sea is one of the world's saltiest. It is so dense with salt that swimming is difficult, but floating, seen above, is easy. People often use the term sea in reference to the ocean. To geographers, a sea is a division of the ocean that is enclosed or partly enclosed by land.

For some ocean creatures, creating light is a matter of life and death. Learn about how light is used in the ocean.

A sea is a large body of salt water. It may be an ocean, or may be a large saltwater lake which like the Caspian Sea, lacks a natural outlet. Salinity map taken from the Aquarius Spacecraft. The rainbow colours represent red = 40ppt and violet = 30 ppt. Seawater is salty.

The sea is the interconnected system of all the Earth's oceanic waters, including the Atlantic, Pacific, Indian, Southern and Arctic Oceans. However, the word "sea" can also be used for many specific, much smaller bodies of seawater, such as the North Sea or the Red Sea.