unfortunately I live in a cave and can't find a second player so it's my right hand against the left, but this is incredibly adorable...simple and sweet. I love the ending. The art reminds me of storybooks and is also just so adorable all around.
The one suggestion Ih ave is to have the objects move with the waves. This will make catching them more difficult, and methinks can spice up gameplay a bit more. Now it feels a bit simple, but then again playing against another player may be more difficult.