The limits and nawre of the influence of water Raman scattering in clear ocean waters are the subject of continuing investigations. At shorter wavelengths (less than 500 nm) the in-water effects ofwater Raman scattering are confined to the near surface layers while the water leaving irradiance is significantly augmented by Raman emission. The water leaving Raman irradiance is apparently affected by the Fraunhofer lines of the solar spectrum.
Robert Hans Stavn,
"Raman-scattering effects at the shorter visible wavelengths in clear ocean waters", Proc. SPIE 1302, Ocean Optics X, (1 September 1990); doi: 10.1117/12.21437; https://doi.org/10.1117/12.21437