The site has got nice sober looks, I'd give it a border Love the Logo too at the bottom part of the site, there is some work to be done
The design is okay, however the green water effect looks off.. I would change it to a brownish beige color instead.
It looks pretty good right now but if I can echo Zerosleep's suggestion, try adding a border around it. I think the open white space would be better enhanced by a border on the sides, preferably in the same color as the brown. Otherwise it's a really nice design and great layout of content!