Question

Why does the sea water turn blue?​

Answer 1

Explanation:

The ocean acts like a sunlight filter.

The ocean is blue because water absorbs colors in the red part of the light spectrum. Like a filter, this leaves behind colors in the blue part of the light spectrum for us to see.

Answer 2

Answer:

It's commonly believed that the ocean is blue because it's reflecting the blue sky. But this is a misconception.

The ocean is blue because of the way it absorbs sunlight, according to the National Oceanic and Atmospheric Administration (NOAA).

When sunlight hits the ocean, the water strongly absorbs long-wavelength colors at the red end of the light spectrum, as well as short-wavelength light, including violet and ultraviolet. The remaining light that we see is mostly made up of blue wavelengths.