very nice work...gl

nice work, i like the hdri but the water just doesn't look real. what material did u use for water?

For the water I started with arch & design and played some with the settings. I'll see what I can do about it.

About that water: to make it look more real you could first of all make it colorless. Usually water isn't blue. Depending on the viewing angle and depth, it will get its color by the reflections and/or transparency (mix with fresnel for the angle). Next step to tweak would be to add light bumping. While at it, you should add some textures to all objects.