Why the colour of sea is blue?

Answer 1

When sunlight hits the ocean it is scattered by the water molecules that make up the ocean. Sunlight is made up of all of the colors of the rainbow (red through violet). Water molecules scatter blue light the most. This makes the ocean look blue.

The reflection of the sky is a common misconception. Algae and plankton also add color to the ocean as well.

Answer 2

There are two reasons for the color of the sea; both of them contribute to the answer.


A. The sea reflects the sky.
You have probably noticed that the sea is not very blue-looking when the sky is overcast. Water reflects and scatters the light that strikes it; this is shown by the fact that you can see your reflection in puddles. When the sky is brilliant blue, the sea is also, because it reflects the blue of the sky.

B. The sea refracts light just as the sky does.
Blue light is more easily bent, or refracted, than red light; thus, light refracted back from the surface of the sea appears blue. Furthermore, when you are underwater the water around you appears blue because more blue light is scattered back to your eye than red light. Here are some professional shots to show what I mean.

The scattering of light by the air, or by water, is called Rayleigh scattering.

Answer 3

the colour of the sea is blue.this is because of the following reasons :
1]that the colour of the sky is blue.
2]the colour of sky is blue because only the blue colour of the primary seven colours which is present in the visible range of radiation emerging from the sun gets reflected from the earth's atmosphere and the other colours gets absorbed.
this can be derived from the law of Rayleigh's law of scattering which states that the amount of light scattering is inversely proportional to the fourrth power of the wavelength of the colour.

Answer 4

Colour of sea is blue due to the presence of phytoplanktons and marine plants found at its bottom levels. the blue-green colour is related to the abundance of microscopic marine plants, called phytoplankton, in the water. Phytoplankton, like most plants, contains green pigments that absorb solar energy. Pure seawater is blue, and a mixture of the two is turquoise (although the exact colour depends on the concentration of phytoplankton).

Answer 5

it is due to two reasons

1. water in the ocean refracts the spectrum of visible light.since blue is a colour that gets refracted much more than other colors and not as much as violet to get disappeared completely water in the sea looks blue.

2.the abundncy of blue green alggae and other microplanktons addon to this

Answer 6

This is called TINDAL's EFFECT.
At certain angle sun rays are reflected by sea.
This means that only blue rays are reflected and other rays are observed
by this The Sea, Sky appears in blue colour. As this phenomena was found by Tindal it was given his name.

Answer 7

Because it is reflecting the mirror image of the sky and the sky is blue because the light coming from the sun is dominating the whole small lights coming from other stars and at day time we can't see other things in the universe.

Answer 8

the sea is blue because it reflect the sky colour which is also blue... the sun give the colour to the sky.....

Answer 9

The sea is blue because it is reflecting the color of the sky.

Answer 10

shadow of sky is reflacting by the water of sea. so that the colour of sea is blue. this cause is founded by Dr. venkateshwar