It is, though. Everyone knows that the sea is only blue because it reflects the colour of the sky. Thats why the sea looks grey and darker under a cloud. You can argue all you like, but thats science. Ive scienced you.
Science this: water is intrinsically blue. A very, very light shade of blue but the more of it there is, the bluer it appears. Its down to a weak absorption of the red component of light: very small volumes of water (like the half-full, half empty glass you use to see if youre in a good mood or not) appear colourless, while larger volumes (like swimming pools) take on the correct blue tinge as light travels further through it. Its true that, outdoors, the reflection of the sky will play a part. Its also true that impurities in water (of which there are often many) can filter light in various ways to achieve other colours, like green: but the water would still be intrinsically blue even if the sky was mauve with yellow polka-dots and even if the water was clogged with chocolate. Thats what intrinsic means.
Professional writer, punk werewolf and nesting place for starfish. Obsessed with squid, spirals and story. I publish short weird fiction online at desincarne.com, and tweet nonsense under the name Jack The Bodiless. You can follow me all you like, just don't touch my stuff.