A very good piece
The background art was very nicely done. Some of the foreground didn't quite live up to the same standard, but this was easily ignored due to the general professionalism and artistic vision of the work as a whole. I felt that the slightly cartoonish expressions of the fish were a little inappropriate, but again, this was easily forgiven. Some of the wide shots that showed off the more massive elements of the world were very impressive and well pulled-off. I also commend you for having the courage to pace this how you wanted to, which I think really paid off. It didn't seem particularly long or drawn out at all – it seemed to be the natural length for this particular story. All in all a very well executed animation. Well done.