Blue seas and Raman scattering

[Prometheus]

So there are plenty of resources around explaining why the sky is blue with Rayleigh scattering.

 

Now according to this website, and others, one of the reasons the sea is blue is Raman scattering:

 

 

Due to this Raman effect the water molecules in sea scatter the white sunlight to wavelengths that mostly fall in the blue regime of light spectra and hence sea appears blue.

 

 

But it fails to explain exactly why Raman scattering would produce a blue sea. As i understand it Rayleigh scattering predominates Raman scattering and would be sufficient to explain the blue sea. If anything, as anti-stokes scattering, which would shift towards the blue end of the spectrum, is rarer than stokes scattering, which shifts towards the red, wouldn't the overall Raman shift be towards the red end?

 

I'd appreciate any pointers or useful resources to help me understand.

[swansont]

What if the light that is scattering starts off in the UV? The visible wavelengths tend to penetrate more readily.

 

https://upload.wikimedia.org/wikipedia/commons/1/18/Absorption_spectrum_of_liquid_water.png

[Prometheus]

Why would the light that is scattered start off in the UV? From having been scattered in the atmosphere via Rayleigh scattering?

 

So the visible spectrum penetrates through water more easily, so that means it scatters less? I'm struggling to see how this characteristic of water accounts for its blue colour though.

 

 

 

Total aside: i wonder whether the fact that the visible spectrum penetrates most readily through water contributed to the eye evolving to see those wavelengths?