The blue colour of the deep sea is a result of:

Choose the correct option to complete the sentence.

The blue colour of the deep sea is a result of the scattering of light.

The visible colours of sunlight are red, orange, yellow, green, blue, indigo, and violet (Arranged according to decreasing wavelengths). 

Water molecules, in general, absorb sunlight and scatter colours. Water absorbs colours with longer wavelengths more than colours with shorter wavelengths. 

When sunlight strikes water, the longer wavelengths of red, orange, yellow, and green are quickly absorbed by water molecules. Because those colours are absorbed, the light we see consists of blue and violet wavelengths. Water scatters these colours rather than absorbs them. As a result, we can see blue water in the deep sea. 

Shorter wavelength colours disperse easily across water bodies, giving them a blue appearance. This phenomenon is known as Rayleigh Scattering.