Those dolphins perform some awesome synchronised swimming, don't they? But honestly, probably they should move somewhat more random.

The water looks a little boring and tiled. Don't we have a neat ocean shader on these forums or in the wiki? If I'm not mistaken, Hummel has written a really great one for the shader contest.

Also the horizon is too near IMO.

Other than that it's not a bad scene after all.

However, wouldn't it be much more impressive, if that guy was standing at bow of the ship like that tough sailor (couldn't find a better pic)?