Question

why do sea look blue in colour

Answer 1

I had this question earlier but with the help of teachers I got it.

The sky is wide and it is blue, the sea or the river gets the reflection of the sky, eventually if you go on a sunny day three might be some clouds which have blue color and if it is night the ocean or sea would have a dark blue color.

sea takes the blue color by the reflection of the sky. But the water us transparent

Answer 2

blue wavelengths are absorbed the least by the deep ocean water and are scattered and reflected back to the observer's eye. Particles in the water may help to reflect blue light. The ocean reflects the blue sky.