This movie is called Finding Nemo because—drumroll, please—it's all about a dad who's trying to find his son named Nemo.
But it's also a little more complicated than that (because everything is, right?). After all, the movie is split almost equally into scenes with Marlin and scenes with Nemo. This tells us that it ain't just a movie about a dad finding his kid…it's also about a kid finding out about himself.
Sure, Marlin finds Nemo. But you know who really finds Nemo? Nemo himself.