From a long time, people are resting on the sea, walk on it on boats and ships, use sea gifts to food and for treatment. But only units are really interested in the sea and try to solve his secrets.
Why is the sea water so blue? Perhaps because it reflects the sky? Many mistakenly believe that it is heavenly smooth to water a bluish shade. In fact, the sea color depends on the set of factors, including weather conditions, water composition and even its inhabitants.
What is the true color of water?
If you pour some sea water into a glass, you can see that it will be transparent. The reason for this phenomenon lies in it. Any water, whether fresh or sea, consists of oxygen and hydrogen.
Both of these elements relate to gases and by definition are invisible. Any change in fluid transparency occurs due to the presence of dissolved substances in it - dirt, algae, a plurality of other particles that usually fall along with precipitation.
What is marine water?
If we talk about the composition of sea water, then in addition to hydrogen and oxygen, there are many other elements in it. As a result of biological and chemical processes In the sea, dissolved gases are nitrogen, carbon dioxide, oxygen. 
Under certain conditions, hydrogen sulfide can accumulate in it. In addition to gases, in seawater there are biogenic (nutritious) substances participating in the creation of organic compounds.
But the most important thing in the sea is salt. It is thanks to her marine water has a salty taste. Saltitude B. different seas May differ significantly. It depends on the number of atmospheric Ospalkov, Potock river water, formation and melting of glaciers.
The most salty is the Red Sea - in percentage ratio, its salinity is 41%. In the Mediterranean Sea contains 39% of the salt, and in black - only 18%.
What affects the color of water in the sea?
Find out why water in the sea has blue tintPeople tried from ancient times, but only in the XIX century scientists began to be seriously interested in this issue and tried to determine the main factors affecting its color.
One of the first seaside explorers became the Swiss natural scientist Francois Trout. To understand the cause of the sea's blue, he created a special device that allowed to measure the shade of fluid on the scale of chemical compounds. 
Later, the researchers have proven that any substances, including sea water, are able to reflect the light of the Sun and individual shades from the rainbow spectrum. For example, ice can pass through yourself any radiation, so it looks transparent, but the snow reflects only white color, for what.
As for the water in the seas and oceans, it is capable of reflecting all shades of blue than and is explained by its blue. In addition to solar radiationThe color is influenced by the clouds (their volume and type), the height of the sun over the horizon, the number of microorganisms.
Why is water in the sea of \u200b\u200bblue?
The color of sea water largely depends on the depth of penetration of the rays of various colors and sizes. The sea is able to absorb and disperse any rays, but, for example, yellow or orange is absorbed faster and at a shallow depth, and blue is slower and at high depths, so water and seems blue. In general, the color of the sea may vary from transparent to green.
With a small depth or the presence of a set of suspended particles in it, orange and red rays are scattered in it, as a result, the sea looks green. At the coast itself, the absorption difference is not reflected on color, so water is seen transparent or with a slight bluish tint. 
A significant impact on the degree of absorption of radiation is the amount of phytoplankton, and more precisely - the volume of chlorophyll needed by these organisms to generate carbon. The greater in the water of chlorophyll, the stronger it absorbs the blue rays and reflects green.
It is noted that in places where many phytoplankton is present, the water is darker, with a blue-green tint. In addition, the color of the sea may depend on the composition and temperature of the water. In more salty and warm seas It has a blue color, and in cold and low-salted - green.
Exists on our planet?
According to the International Geographic Bureau, there are 4 oceans and 54 seas in Earth, which together form the world ocean, which makes up two thirds of the surface of everything globe.
What color is the ocean?
The color of sea water in the world ocean is far from uniform, and in different sites He has his own, that is, every sea has a unique color shade inherent only to him.
What is the color of the sea depends on?
The color of the water varies periodically, and it depends on many factors, primarily from lighting, depth, transparency, seabed colors, the presence of gases and quantitative density of microorganisms inhabiting marine spaces, as well as from such phenomena as a glow and sea bloom.
In the distance of the sky in the color of the sky. IN cloudy weather It is gray, in clear - blue. When the sun sits down, the bright blue sea acquires a golden shade. During the excitement, the sea seems whites.
Scientists learning sea depths, argue that many seas got their name due to the color of water. They believe that in the warm seas tropical zone water color dark blue, and even blue, in the shelf seas, it is greenish, and in muddy coastal seas It has a yellowish tint.
Why is the white sea called white, black - black, red - red, and yellow - yellow?
The White Sea is the Sacred Sea of \u200b\u200bthe North, it traves many unsolved secrets. The White Sea has its name, perhaps from color white snow and ice covering it in winter time. But there is another assumption that is that the name "White" Sea received from the religious meaning of the sphere, that is, heavenly. After all, in semantics white color is heavenly, divine color. There is a hypothesis that the White Sea and its coast is on the territory of the once prosperous mystical civilization - hyperborei.
It turned its name because in cloudy weather the surface of the sea darkens under black clouds. Turkic nomads who noticed this, gave him the name - "Kara-Deniz".
There is another believable assumption about the origin of the name of the Black Sea. From a long time, it was known that all items who visited him mysterious depths - black. And it happens because, at a depth of more than 200 meters, sea water is saturated with hydrogen sulfide, easily forming a salt of black.
The Red Sea has a red color due to brown microscopic algae, which periodically develop in it. But there is also another version regarding the name of the Red Sea. It is said that in the distant times the sailors were given by the sea name "red" because of the colors of the rocks that it was surrounded.
Exists ancient legendRelated to biblical events, which tells about the serious transition of Jews from Egypt to Israel across the Red Sea. Moses, who led the Jewish people, ordered God's name Passing with sea waters. And before their eyes, a deep bottom of the sea was opened with cliffs and mountain ranges, with gorges and depressions, when moving through which a lot of people died, which was the reason for the name of the Red Sea.
The Red Sea is one of the most transparent and most saline seas. Its crystal purity is explained by any river in it, which could bring with him or sand with them and, thus, stupid sea waters. And at least the sea and has a red name, but its water has a beautiful azure color.
The yellow sea is named because it periodically acquires a yellowish clay tint, which is a lot on the coast.
Is it possible to determine the color of the sea?
For the first time, the device for determining the color of water bodies was invented yet in late XIX. century Swiss geographer trout, which was studying the lakes. The device was somewhat uncomfortable to work with sea water.
The famous German oceanographer Uh developed the color of the color of water consisting of a set of twenty-two glass beanted tubes with samples of solutions of different shades, from light-aquamarine to brown-green. Uhll finalized the device, improved it, and in this time With this device, you can determine the color of sea water.
Of course, if the sea water is typing in the palm of your hand, it will turn out to be transparent, without any color. And only in the sea or ocean, it acquires its unique shade.
What seas are the most green water color?
There is amazing on earth beautiful seas With fabulous shades fabulous. These sea "beauties" can be attributed to Sargassovo Sea.
Sargassovo Sea has a bright greenish tint due to the accumulation of green algae on its surface, which form entire islands, roads, and even the fields. And the sailors who first found themselves in the area of \u200b\u200bthe Ocean mistakenly took him for the land.
One of the brightest tropical seas is the Caribbean Sea. Its water shines from rich-turquoise color to bright emerald shades.
The Sea of \u200b\u200bAzov also has a greenish tint, especially during the plankton's development season. And in the Storm Storm Season, the sea acquires color from yellow-green to yellow-brown due to changes in the transparency of water. The sea begins to miserable, because periodically breaking the bottom alone and an increase in the river flow of turbid waters.
And which color shades notice in seawood People for whom the sea is the place of everyday work?
Those who tied their lives with the sea see and notice in the most unusual marine and ocean waters thin shades. After all, the sea changes over time of day, it depends on the seasons and weather factors. When the nature of the sea changes, then its color changes. And these changes are impossible not to notice.
One of the most vivid impressions can be attributed to the memories of the sea. What is remembered by this beautiful marine element? Affectionate rays of the southern sun? Gentle velvet coastal sand? Sollying Wave Whisper or Warm Salt Wind Breathing? ..
Probably, against the background of all these intoxicating soul of memorable moments, the color of the sea is the strongest. This fantastic blue, pleasing to our delighted look, remains in memory aquamarine delight, turquoise fairy tale or azure legend. And all the picturesque shades of the sea merge into one wonderful sea colorWith which any memories of the sea is associated.
If you try to answer the question of which the sea is the biggest, it is unlikely possible to come to a single true answer. After all, each sea has its own unique color from the blue gamut with unique shades of turquoise, aquamarine or emerald.
The biggest sea is the sea that lives in our joyful memories or in sweet dreams of beautiful. And dreams will certainly come true ...
Some reservoirs seem to us with green, other blue, the third - blue. Water scored in transparent container is transparent. In order to place everything in places, consider physical properties water.
Water color
Clean water has a blue color. However, the intensity of the shade is so small that it is impossible to notice it in a small capacity. If a large aquarium from glass is filled with water, then the blue color will become not equipped with a naked eye.
What influences the shade? The human eye sees the reflected light rays, so it is important which ones the substance absorbs, and which reflects. The spectrum of visible sunlight consists of all colors of the rainbow.
The water molecule is red and the green part of the spectrum absorbs, and blue reflects. It gives water a bluish tint. The greater the thickness of the water layer, the more intense its color.
Natural reservoirs
It is in the Blue theory, in nature, clean and the same colors are rare. Why is water in the sea blue? Away from the shore of the ocean and the sea have great depth And it seems to the observer black and blue or purple. Closer to the shore water becomes lighter: bluish, greenish, color sea wave etc.
Why does such a difference arise? Only the thickness of the water reservoir, but also the presence of suspended particles, is on the intensity of color and shade. At the shores in the pelagic layer, many algae and biological residues. Some of them get into the sea from sushi. Green phytoplankton, since it contains chlorophyll. It reflects the green part of the spectrum, and absorbs red and blue. The presence of algae determines the greenish nature of the shade of coastal waters.
Depth and color
Sea depths I. sand deserts Have a lot in common - there are extremely few living beings in them. On satellite images, it is clearly seen which areas are rich in living organisms, and which - no.
Why sea blue color, not, say, green? Since in the center these reservoirs have a greater depth. Along coastline Water color greener, therefore, here a large number of Marine inhabitants. In blue depths biological diversity Popple, like hot desert spaces.
To answer the question why the sea is blue, consider changing the color of the subject immersed in it. Yellow submarine near the surface will seem to us as it really is.
The deeper it goes down, the more difficult the sunshine to get to it. With each meter, the amount of light that has achieved its surface decreases, which is associated with the reflective ability of both the water itself and the particles of alive and inanimate nature in it.
At the depth of thirty meters, the submarine will seem to be the observer already bluish green. This is due to the fact that most of The yellow-red spectrum will absorb water. When it is still a few tens of meters below, water molecules are lit and green spectrum. As a result, the yellow submarine will acquire a dark blue tint.
The ocean contains much more suspended particles than in clean water. At the same depth in the first case will be much darker than in the second.
in the ocean
Sea and does not have the ability to glow. All that can be seen under its surface looks like that reflected solar rays. I wonder why the rivers and the sea are blue, because daylight is not blue? The surface is almost the same as over the water.
The maximum proportion of radiation falls on the yellow-green segment of the visible spectrum. The sea color depends on the rays of which part of the spectrum are reflected, and which is absorbed. This complex mechanism was described in detail by Geophysician V. Schuleikin at the beginning of the twentieth century.
Molecules of which consists of the ocean, fluctuate and rotate with different intensity, which affects the reflective and absorption capacity. They easily absorb red rays, and blue reflect. For this reason, observers who are over the sea see it bluish or purple.
Red rays are absorbed on the first meters of depth, green - closer to 100, and blue - only on the second third hundred.
Transparency of the seas
The transparency of water in the world ocean depends not only on the physical properties of the liquid, but also from the organisms and particles contained in it. The torment creates plankton creatures, dirt and suspension of various substances. Less than all benthic unicellites contained off the coast. Easter. Therefore, the water there is the most transparent compared to other sites of the World Ocean.
The sea is scattered over the entire surface of the globe. Some of them are located in the area of \u200b\u200bthe tropics, the other - in the pole zone. Abundant precipitation and little fall over one sunny days. A number of seas are in arid areas with great intensity. solar radiation. These indicators also affect the sea color visible to the observer.
Thus, having studied all the physical properties of water, now you can confidently answer the question why the sea is blue.
Why is the ocean of blue? August 12th, 2017
Blue ocean. Green ocean. Transparent colorless drinking water in glass. So what color is water? This question has an amazing answer. Clean water - blue. This color is very weak, so it is imperceptible in a small glass.
But if we put water into a huge glass aquarium, we will see a distinct blue tint of water.
What does water color depend on? The color of water depends on the peculiarities of absorption and reflection of light by water molecules. White light, for example is sunny, can be decomposed on the components of its colors. The combination of these colors is called a spectrum. White light spectrum consists of rainbow colors. Water molecules absorb the light in the red-green part of the spectrum. The rays of the blue part of the spectrum are reflected by molecules. Therefore, we perceive the water color as blue.
However, in natural water bodies, the color of water can be very diverse. In the midst of the ocean water has a deep dark blue, almost purple, color. Along the coastline, the shades of water vary from blue to green and yellow-green. Why such a difference? The variety of shades depends on which particles are weighted in water and what is the depth of the reservoir. Near the coast, the ocean water is filled with small floating plants and organic particles that fall into it from sushi. Just like their earthly fellow water plantswhich are called phytoplankton, contain chlorophyll.
Chlorophyll absorbs the rays of the red and blue part of the spectrum, and reflects the green light. Therefore, near the shore, water often has a green shade.
Color of water and depth deep blue water Ocean is similar to deserted white deserts - and there and there is very little life. If you look from space, you can see what oceans are abounding life, and which is not. Green water like tropical jungle Continents filled with life. The deep blue water is poor in life and is similar to white lifeless sushi deserts. The absorption of light by particles suspended in water changes the perception of color and under water. Imagine that you are immersed in the water in a yellow submarine.
Close to the surface, your submarine will look in accurately according to the original color - yellow. But the deeper you are immersing, the more distance should overcome the light from the surface to reach the submarine. When it drops to a depth of 30 meters, most of the rays of yellow, orange and red colors will be absorbed by water molecules.
The boat will reach the rays of blue and green spectrum parts. And you look at your submarine will not be yellow, but blue-green. If you are immersed even deeper, there will be green rays from section. Under the water boat now seems dim blue. Ocean watered waters in which organic residues weighted, absorb more light than transparent pure water. Therefore, when immersed in muddy water Darkness comes faster.
The ocean consists of salted water. He himself, if you throw away all glowing grains, does not shine. That is, the whole light that we see coming from the ocean, it is reflected sunlight. But the sunlight is also not blue. The spectrum of sunlight at the surface of the ocean is such.
The intensity of solar radiation falling on the Earth depending on the wavelength at sea level. As you can see, the maximum radiation falls on a green and yellow part of the visible range.
The color of the ocean is determined by the mechanism of absorption and dispersion of the solar color by water molecules. The mechanism is very complex. It was completely described only in 1923 by Geophysian Vasily Schuleikin. It turned out that water molecules perform oscillatory and rotational movements and as a result, it absorbs different wavelengths in different ways. Most of all are absorbed red, and less than a blue. The blue color is dissipated and reflected in the air, and the red remains absorbed inside the ocean. This leads to the fact that the ocean seems to us blue, and under water all photos give blue. So, if you are going to take pictures of the fish, do not forget the outbreak.
A diagram showing how sunlight passes through the ocean. The red is almost immediately absorbed, so there is almost no red in the shallow depth of red flowers under water. Green reaches meters to a hundred. And blue - up to 200-300 m.
The transparency of the ocean is determined not only by water molecules, but also small creatures that they live there. Plankton, suspension, dirt - all this reduces transparency in the ocean. Recently, NASA conducted research and found that the lowest concentration of plankton is located off the coast of Easter Island.
That is why the ocean is the most transparent in the world.
If you have not seen, then I recommend to look at the project of the Earth Observatory (NASA) project and see completely stunning observations of phytoplankton concentration in the World Ocean over the past ten years. There is also the behavior of the temperature of the ocean. There can be seen, for example, where on Earth the warmest sea, why whales spend the summer in northern latitudes At the coast of Alaska and Aleutian islands, or why in three weeks of swimming Pacific Ocean. We have not seen almost no livelihood from the shore.
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"Why sky blue or blue?" - Classic question of a curious child. It is really interesting, and sometimes adults. However, the question is why the same color of the ocean or the sea, we ask much less often. Perhaps this is due to the fact that the sea is under the sky? And just reflects his color? But if science has taught us something, this is the fact that obvious answers most often turn out to be incorrect. As in this case. Because the color of the ocean is actually associated with the fact that the water is blue in nature. The sky seems so because of Raleaevsky scattering, in which the blue light is reflected from air molecules better than red.
Some of this radiation is reflected from the surface of the water, but the sea looks blue therefore. The main reason here in the absorption of light, and not reflection. Different types Radiations act differently on water molecules. When sunlight enters the water, the red part of its spectrum makes them fluctuate. Thus, water absorbs red, yellow and green colors Better than blue. Most water molecules react poorly to the last, so it goes down pretty freely.
In a small amount of water, for example, in a glass, it seems white, but even here the light of the red spectrum is worse than the blue. In the ocean, where the depth reaches many kilometers, the red light is almost completely absorbed through a hundred meters, so water looks blue. However, the distance is dissolved and this color is at a depth of a more kilometer water is already completely dark. Some part of the blue light is reflected in water back, towards the surface, giving the seas and the oceans of the land that wonderful coloring that we love so much. In some places, planets have reservoirs with a different color. For example, greenish blue, if there are many algae in water, reflecting the green light. And the mouths at all seem brown due to the large concentration of soil and salts.
Some marine lifeBy the way, learned how to use blue water at certain depths - they purchased a red color. What is the focus, you ask? The fact that in the absence of light of the red part of the spectrum they seem black. It helps them to avoid the attention of predators and, in turn, more successfully hunt for their prey.
So, whatever color is neither the sky at this particular point in time, remember - to a certain depth of the sea and the ocean is always blue. And now you know why.
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