Great as always! I love seeing those round craters in the rocks.
The only thing I might suggest is making the worms themselves more prominent somehow. They are relatively tiny, which is fine, but the huge waves at the bottom of the picture are overwhelming them a bit. The sea is beautiful, of course -- it's just stealing the show to some degree.
Maybe you could see what it looks like if they had name tags/scores above their heads, like in a lot of worms games. (As long as it wouldn't ruin the effect of realism you have going.)
Sorry for the long comment; I can't critique without a premium account.