Seawater is blue simply not because the water is blue as we see it. The blue color of seawater is determined entirely by sunlight.
Sunlight due to the light of 7 colors: red, orange, yellow, green, blue, purple, constitutes. When sunlight shines on the sea surface, there are many small suspended particles in the seawater, long-wave light such as red or orange light cannot penetrate these obstacles and go straight ahead. front.
The blue color of seawater is determined entirely by sunlight.
In the process of moving forward, they are constantly being absorbed by the seawater and marine life. And the light with short waves such as blue, purple light, is also partly absorbed by seawater and seaweed, but most of the time when the sea water is obstructed, it scatter around or immediately reflect back. again. What we see is the scattered or reflected light. The deeper the seawater, the more blue light is scattered and reflected, so the sea is always blue.
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