Well i had never the time to work from start to end, but did model this for a long time like many monts. Maybe 5-9 hours/week. Not sure.
With cinema i have been "playing" since the r8 came out.
But i have a history back over 20 years in 3d.
Im glad if this helps anyone to create an ocean scene. By changing the Absorption Color and Distance and using a cube for this material you get much better looking water effects. The deeper water the darker color...