A nice and cool beach game!!!
The gameplay is smooth, the water in background and the shadows, give a real touch.
In my opinion , the UI could be better and it would be even more interesting if you made it in 2d or if you allowed the player to change the camera perspective, because it was little difficult for me to play in this perspective. And also as everyone already commented, a AI system would be really great...
Overall a nice casual two player game!!!