1. When Ariel catches Flounder through that circular thing on the sunken ship, and the shark gets stuck, he must die. It's scientific, but sharks die when they stop swimming.
2. When Ariel and Flounder go up to the surface to visit Scuttle, he is looking through a telescope backwards. He sees them really far away in the lens, but when the camera shows how close he is to them, they are just touching the rock. But then they go back to looking through the telescope and they are in the middle of the water.
3. When Ariel discovers she is late for the concert, the 2 evil eels that Ursula has are watching Ariel. (Ursula sees through their eyes.) And the yellow eyes are on the outside of them. The next time you see them together, they are in the same spot, but the yellow is on the inside. And Ursula yells at them, but she is in the cave and they are watching Ariel, so how do they hear her yelling?
4. When Ariel is singing "Part of Your World" and she swims up towards the top of her cave, there is a circular patch of light. It seems as if her face is inches away from the hole in the cave, but then they show the camera looking up towards the patch of light and she is meters and meters away.
I hope you all notice these!