Nice work bud, I can see you are using the free version, try some of these plugins [link] the waterworks adds some great surf and white caps. If possible I would invest in getting your TG registered as you will see a remarkable improvement in the clarity. as well as the ability to add some strata and bitmap textures with your procedural TG ones.
Yeah, I got it registered, and am now enjoying large-size renders and having the options of Ultra and Extra Blended Detail - they make a lot of difference.