Jonas and the Sea
Zeezucht (original)
A boy casts aside everything in pursuit of his dream, a quest we all share: the quest to find a place he can call home, even if it's underwater. He loves to swim with fishes and builds an ingenious machine to be able to dive.
Starring
Watch "Jonas and the Sea" on Kanopy released in 2015. It's a animation movie, and has a rating of 6.7 out of 10 from Imdb which is usually fine for this kind of movie.