It has a tender story line told without dialogue or narration.
Kelp, barnacles, and the California coast are represented realistically giving the sandpiper mom and chick a firm yet sandy stage.
I highly recommend reading about the making of Piper.
The childlike quality of the chick is completely relatable.
Nearly all reviews less than five stars are because the film is only 6 minutes.
I'll show this to everyone I can because it is so sweet, and the animation is as good as it gets.