Why is the sea blue?

Earthy love story: Because blue is pure, just like my love with you has no impurities.

Popular Science: Why is the sea blue?

1, I think everyone who has been to the seaside knows. In fact, seawater is transparent when held by hand. Just like anyone we usually see in the Jianghu. But why is water blue or green at first glance? In fact, this is related to the refraction and reflection of solar light. Sunlight contains different rays, such as red, orange, yellow, green, blue, blue and purple. Some colors have longer wavelengths. So when it hits the sea, it will be absorbed by seawater, that is, suspended particles and other objects in the water.

2. Because people can't see the light with longer wavelength and deeper color. Blue light and violet light have shorter wavelengths. So when it touches water, water molecules or other particles, it will scatter or reflect back in all directions. Therefore, the deeper the sea water, the bluer it is, and the same is true. And some seawater is green, because in some sea areas, seawater contains a lot of green algae and plankton. Can absorb most of the red or blue light. Reflect green light.

3, so occasionally I will see the green sea. Whether it is blue or green. It's not that the color of the sea itself has changed. Just because of the principle of reflection and refraction of light. What people see with the naked eye is the color of blue or green sea water. And the size of the sea area. Or the depth of the ocean, or the creatures in the water. Sea water will also show different colors.

The sea and blue sky are blue. This is probably the artifact of the creator. Heaven and earth complement each other, and from afar, the sea is connected with the blue sky. The sea is sometimes like a mirror. Reflecting the blue sky. At this time, the sea will appear bluer. Only with the aggravation of marine pollution in recent years. The sea water in some areas is polluted. The color of the sample will naturally not look so blue.