The vast ocean, from blue to green, is beautiful and spectacular. Ocean, ocean. People always say this, but many people don't know that the sea and the ocean are not exactly the same thing, they are different from each other. So, how are they different, and how do they relate?
The ocean is the central part of the ocean and the main body of the ocean. The total area of the world's oceans accounts for approximately 89% of the ocean area. The water depth of the ocean is generally more than 3,000 meters, and the deepest can reach more than 10,000 meters. The ocean is far away from the land and is not affected by the land. Its hydrology and salinity vary little. Each ocean has its own unique system of currents and tides. The water color of the ocean is blue, very transparent, and there are very few impurities in the water. There are 4 oceans in the world, namely the Pacific Ocean, the Indian Ocean, the Atlantic Ocean, and the Arctic Ocean.
The Bohai Sea is China’s inland sea
The East China Sea is one of the marginal seas of the Pacific Ocean
The sea is at the edge of the ocean and is a subsidiary part of the ocean. The area of the sea accounts for about 11% of the ocean. The water depth of the sea is relatively shallow, with the average depth ranging from a few meters to two or three thousand meters. The sea is close to the continent and is affected by the continent, rivers, climate and seasons. The temperature, salinity, color and transparency of the sea water are all affected by the land and have obvious changes. In summer, the sea water warms and in winter the water temperature drops; in some sea areas, the sea water even freezes. Where large rivers enter the sea, or during rainy seasons, the sea water becomes fresher. Due to the influence of the land, rivers carry sediment into the sea, making the nearshore seawater turbid and unclear, and the transparency of the seawater is poor. The sea does not have its own independent tides and currents. The sea can be divided into marginal sea, inland sea and Mediterranean Sea. The marginal sea is both the edge of the ocean and the frontier of the continent. This type of sea is widely connected with the ocean and is generally separated from the ocean by a group of islands. my country's East China Sea and South China Sea are the marginal seas of the Pacific Ocean. Inland seas are seas located inside continents, such as the Baltic Sea in Europe. The Mediterranean Sea is a sea between several continents, and the water depth is generally deeper than that of inland seas. There are nearly 50 major seas in the world. The Pacific Ocean has the most, followed by the Atlantic Ocean, and the Indian Ocean and the Arctic Ocean are about the same.
The Mediterranean Sea surrounded by the continents of Europe, Asia and Africa
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